https://csdms.colorado.edu/csdms_wiki/api.php?action=feedcontributions&feedformat=atom&user=Daud 2026-04-27T02:08:26Z User contributions MediaWiki 1.44.2 https://csdms.colorado.edu/csdms_wiki/index.php?title=2022_CSDMS_meeting-070&diff=415713 2022-03-08T22:45:37Z

<p>Daud: </p> <hr /> <div>{{CSDMS meeting personal information template-2022<br /> |CSDMS meeting first name=Ntambila Simon<br /> |CSDMS meeting last name=Daud Masungulwa<br /> |CSDMS Pronouns=he/him<br /> |CSDMS meeting institute=Virginia Tech,<br /> |CSDMS meeting city=Blacksburg,<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Virginia<br /> |CSDMS meeting email address=dntambila@vt.edu<br /> |CSDMS meeting phone=5409981557<br /> }}<br /> {{CSDMS meeting select clinics1 2022<br /> |CSDMS_meeting_select_clinics1_2022=3) The Art of Modeling<br /> }}<br /> {{CSDMS meeting select clinics2 2022<br /> |CSDMS_meeting_select_clinics2_2022=3) Introduction to Landlab<br /> }}<br /> {{CSDMS meeting select clinics3 2022<br /> |CSDMS_meeting_select_clinics3_2022=1) Component Creation with Landlab<br /> }}<br /> {{CSDMS meeting abstract yes no 2022<br /> |CSDMS meeting abstract submit=Yes<br /> }}<br /> {{CSDMS meeting abstract title temp2022<br /> |CSDMS meeting abstract title=Elucidating the Magma Plumbing System of the Active Volcano Ol Doinyo Lengai, Natron Rift, Tanzania Using Geodesy and Numerical Modeling<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Human Dimensions Focus Research Group, Geodynamics Focus Research Group<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=D. Sarah<br /> |CSDMS meeting coauthor last name abstract=Stamps<br /> |CSDMS meeting coauthor institute / Organization=Virginia Tech,<br /> |CSDMS meeting coauthor town-city=Blacksburg,<br /> |CSDMS meeting coauthor country=United States<br /> |State=Virginia<br /> |CSDMS meeting coauthor email address=dstamps@vt.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Maurizio<br /> |CSDMS meeting coauthor last name abstract=Battaglia<br /> |CSDMS meeting coauthor institute / Organization=The University of Rome, Italy<br /> |CSDMS meeting coauthor town-city=Rome<br /> |CSDMS meeting coauthor country=Italy<br /> |CSDMS meeting coauthor email address=maurizio.battaglia@uniroma1.it<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Mong-Han<br /> |CSDMS meeting coauthor last name abstract=Huang<br /> |CSDMS meeting coauthor institute / Organization=University of Maryland,<br /> |CSDMS meeting coauthor town-city=College Park,<br /> |CSDMS meeting coauthor country=United States<br /> |State=Maryland<br /> |CSDMS meeting coauthor email address=mhhuang@umd.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Elifuraha<br /> |CSDMS meeting coauthor last name abstract=Saria<br /> |CSDMS meeting coauthor institute / Organization=Ardhi University,<br /> |CSDMS meeting coauthor town-city=Dar es Salaam,<br /> |CSDMS meeting coauthor country=Tanzania<br /> |CSDMS meeting coauthor email address=saria.elifuraha@gmail.com<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Kang-Hyeun<br /> |CSDMS meeting coauthor last name abstract=Ji<br /> |CSDMS meeting coauthor institute / Organization=KIGAM,<br /> |CSDMS meeting coauthor town-city=Daejeon,<br /> |CSDMS meeting coauthor country=Korea, South<br /> |CSDMS meeting coauthor email address=khji@kigam.re.kr<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Kelsey<br /> |CSDMS meeting coauthor last name abstract=Popolizio<br /> |CSDMS meeting coauthor institute / Organization=Virginia Tech,<br /> |CSDMS meeting coauthor town-city=Blacksburg,<br /> |CSDMS meeting coauthor country=United States<br /> |State=Virginia<br /> |CSDMS meeting coauthor email address=kelspop@vt.edu<br /> }}<br /> {{CSDMS meeting abstract template 2022<br /> |CSDMS meeting abstract=The active volcano Ol Doinyo Lengai is located in the magma-rich southern Eastern Branch of the East African Rift and erupts unique low-temperature carbonatites. Between 2007 and 2010, the volcano had several explosions and erupted with ash falls, and lava flows (VEI 3) that caused damage to the nearby communities. Although this volcano has been studied for decades, its plumbing system is still poorly understood, in part, because of the lack of precise observations of surface deformation during periods of quiet and unrest. This study investigates the volcanic plumbing system of Ol Doinyo Lengai and surroundings using data from the permanent Global Navigation Satellite System (GNSS) network monitoring the volcano called TZVOLCANO and Interferometric Synthetic Aperture Radar (InSAR) observations. We calculate velocities for 6 continuously operating GNSS sites distributed around Ol Doinyo Lengai for a timespan between 2016 and 2021 and also process InSAR data for nearly the same time-period to constrain surface motions. We then use the GNSS deformation signals and InSAR observations to solve for magma sources embedded in a homogeneous and elastic half space using the USGS inversion code dMODELS. Both GNSS and InSAR inversion results quantify a deflating spherical geometry source at a depth of ~1.3 km with a volume change ∆V of -0.05 ± 0.01x106m3 located east of Ol Doinyo Lengai and southwest of the dormant volcano Gelai. InSAR inversions alone also suggest a closing dike model at a depth of ~9 km similar to the location resolved for the 2007 Ol Doinyo Lengai dike. This work suggests a shallow magma reservoir exists east of Ol Doinyo Lengai and that the 2007 dike is actively contracting. This magma source influences the onset, size, duration and hazard of eruptions of the volcano, and plays a significant role in triggering slip on border faults during early phases of continental rifting through stress transfer.<br /> }}<br /> {{CSDMS meeting abstract figures<br /> |CSDMS meeting abstract figure=Daud poster 60x36in CSDMS Workshop.pdf<br /> }}<br /> {{blank line template}}</div>

Daud https://csdms.colorado.edu/csdms_wiki/index.php?title=File:Daud_poster_60x36in_CSDMS_Workshop.pdf&diff=415712 2022-03-08T22:44:11Z

<p>Daud: </p> <hr /> <div></div>

Daud https://csdms.colorado.edu/csdms_wiki/index.php?title=2022_CSDMS_meeting-070&diff=415624 2022-03-04T03:21:30Z

<p>Daud: </p> <hr /> <div>{{CSDMS meeting personal information template-2022<br /> |CSDMS meeting first name=Ntambila Simon<br /> |CSDMS meeting last name=Daud Masungulwa<br /> |CSDMS Pronouns=he/him<br /> |CSDMS meeting institute=Virginia Tech,<br /> |CSDMS meeting city=Blacksburg,<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Virginia<br /> |CSDMS meeting email address=dntambila@vt.edu<br /> |CSDMS meeting phone=5409981557<br /> }}<br /> {{CSDMS meeting select clinics1 2022<br /> |CSDMS_meeting_select_clinics1_2022=3) The Art of Modeling<br /> }}<br /> {{CSDMS meeting select clinics2 2022<br /> |CSDMS_meeting_select_clinics2_2022=3) Introduction to Landlab<br /> }}<br /> {{CSDMS meeting select clinics3 2022<br /> |CSDMS_meeting_select_clinics3_2022=1) Component Creation with Landlab<br /> }}<br /> {{CSDMS meeting abstract yes no 2022<br /> |CSDMS meeting abstract submit=Yes<br /> }}<br /> {{CSDMS meeting abstract title temp2022<br /> |CSDMS meeting abstract title=Elucidating the Magma Plumbing System of the Active Volcano Ol Doinyo Lengai, Natron Rift, Tanzania Using Geodesy and Numerical Modeling<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Human Dimensions Focus Research Group, Geodynamics Focus Research Group<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=D. Sarah<br /> |CSDMS meeting coauthor last name abstract=Stamps<br /> |CSDMS meeting coauthor institute / Organization=Virginia Tech,<br /> |CSDMS meeting coauthor town-city=Blacksburg,<br /> |CSDMS meeting coauthor country=United States<br /> |State=Virginia<br /> |CSDMS meeting coauthor email address=dstamps@vt.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Maurizio<br /> |CSDMS meeting coauthor last name abstract=Battaglia<br /> |CSDMS meeting coauthor institute / Organization=The University of Rome, Italy<br /> |CSDMS meeting coauthor town-city=Rome<br /> |CSDMS meeting coauthor country=Italy<br /> |CSDMS meeting coauthor email address=maurizio.battaglia@uniroma1.it<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Mong-Han<br /> |CSDMS meeting coauthor last name abstract=Huang<br /> |CSDMS meeting coauthor institute / Organization=University of Maryland,<br /> |CSDMS meeting coauthor town-city=College Park,<br /> |CSDMS meeting coauthor country=United States<br /> |State=Maryland<br /> |CSDMS meeting coauthor email address=mhhuang@umd.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Elifuraha<br /> |CSDMS meeting coauthor last name abstract=Saria<br /> |CSDMS meeting coauthor institute / Organization=Ardhi University,<br /> |CSDMS meeting coauthor town-city=Dar es Salaam,<br /> |CSDMS meeting coauthor country=Tanzania<br /> |CSDMS meeting coauthor email address=saria.elifuraha@gmail.com<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Kang-Hyeun<br /> |CSDMS meeting coauthor last name abstract=Ji<br /> |CSDMS meeting coauthor institute / Organization=KIGAM,<br /> |CSDMS meeting coauthor town-city=Daejeon,<br /> |CSDMS meeting coauthor country=Korea, South<br /> |CSDMS meeting coauthor email address=khji@kigam.re.kr<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Kelsey<br /> |CSDMS meeting coauthor last name abstract=Popolizio<br /> |CSDMS meeting coauthor institute / Organization=Virginia Tech,<br /> |CSDMS meeting coauthor town-city=Blacksburg,<br /> |CSDMS meeting coauthor country=United States<br /> |State=Virginia<br /> |CSDMS meeting coauthor email address=kelspop@vt.edu<br /> }}<br /> {{CSDMS meeting abstract template 2022<br /> |CSDMS meeting abstract=The active volcano Ol Doinyo Lengai is located in the magma-rich southern Eastern Branch of the East African Rift and erupts unique low-temperature carbonatites. Between 2007 and 2010, the volcano had several explosions and erupted with ash falls, and lava flows (VEI 3) that caused damage to the nearby communities. Although this volcano has been studied for decades, its plumbing system is still poorly understood, in part, because of the lack of precise observations of surface deformation during periods of quiet and unrest. This study investigates the volcanic plumbing system of Ol Doinyo Lengai and surroundings using data from the permanent Global Navigation Satellite System (GNSS) network monitoring the volcano called TZVOLCANO and Interferometric Synthetic Aperture Radar (InSAR) observations. We calculate velocities for 6 continuously operating GNSS sites distributed around Ol Doinyo Lengai for a timespan between 2016 and 2021 and also process InSAR data for nearly the same time-period to constrain surface motions. We then use the GNSS deformation signals and InSAR observations to solve for magma sources embedded in a homogeneous and elastic half space using the USGS inversion code dMODELS. Both GNSS and InSAR inversion results quantify a deflating spherical geometry source at a depth of ~1.3 km with a volume change ∆V of -0.05 ± 0.01x106m3 located east of Ol Doinyo Lengai and southwest of the dormant volcano Gelai. InSAR inversions alone also suggest a closing dike model at a depth of ~9 km similar to the location resolved for the 2007 Ol Doinyo Lengai dike. This work suggests a shallow magma reservoir exists east of Ol Doinyo Lengai and that the 2007 dike is actively contracting. This magma source influences the onset, size, duration and hazard of eruptions of the volcano, and plays a significant role in triggering slip on border faults during early phases of continental rifting through stress transfer.<br /> }}<br /> {{blank line template}}</div>

Daud https://csdms.colorado.edu/csdms_wiki/index.php?title=2022_CSDMS_meeting-070&diff=415623 2022-03-04T02:55:09Z

<p>Daud: </p> <hr /> <div>{{CSDMS meeting personal information template-2022<br /> |CSDMS meeting first name=Ntambila Simon<br /> |CSDMS meeting last name=Daud Masungulwa<br /> |CSDMS Pronouns=he/him<br /> |CSDMS meeting institute=Virginia Tech,<br /> |CSDMS meeting city=Blacksburg,<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Virginia<br /> |CSDMS meeting email address=dntambila@vt.edu<br /> |CSDMS meeting phone=5409981557<br /> }}<br /> {{CSDMS meeting select clinics1 2022<br /> |CSDMS_meeting_select_clinics1_2022=1) Environmental seismology and distributed acoustic sensing (DAS)<br /> }}<br /> {{CSDMS meeting select clinics2 2022<br /> |CSDMS_meeting_select_clinics2_2022=1) Modeling Water Movement and Reservoir Operations with mosartwmpy<br /> }}<br /> {{CSDMS meeting select clinics3 2022<br /> |CSDMS_meeting_select_clinics3_2022=1) Component Creation with Landlab<br /> }}<br /> {{CSDMS meeting abstract yes no 2022<br /> |CSDMS meeting abstract submit=Yes<br /> }}<br /> {{CSDMS meeting abstract title temp2022<br /> |CSDMS meeting abstract title=Elucidating the Magma Plumbing System of the Active Volcano Ol Doinyo Lengai, Natron Rift, Tanzania Using Geodesy and Numerical Modeling<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Human Dimensions Focus Research Group, Geodynamics Focus Research Group<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=D. Sarah<br /> |CSDMS meeting coauthor last name abstract=Stamps<br /> |CSDMS meeting coauthor institute / Organization=Virginia Tech,<br /> |CSDMS meeting coauthor town-city=Blacksburg,<br /> |CSDMS meeting coauthor country=United States<br /> |State=Virginia<br /> |CSDMS meeting coauthor email address=dstamps@vt.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Maurizio<br /> |CSDMS meeting coauthor last name abstract=Battaglia<br /> |CSDMS meeting coauthor institute / Organization=The University of Rome, Italy<br /> |CSDMS meeting coauthor town-city=Rome<br /> |CSDMS meeting coauthor country=Italy<br /> |CSDMS meeting coauthor email address=maurizio.battaglia@uniroma1.it<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Mong-Han<br /> |CSDMS meeting coauthor last name abstract=Huang<br /> |CSDMS meeting coauthor institute / Organization=University of Maryland,<br /> |CSDMS meeting coauthor town-city=College Park,<br /> |CSDMS meeting coauthor country=United States<br /> |State=Maryland<br /> |CSDMS meeting coauthor email address=mhhuang@umd.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Elifuraha<br /> |CSDMS meeting coauthor last name abstract=Saria<br /> |CSDMS meeting coauthor institute / Organization=Ardhi University,<br /> |CSDMS meeting coauthor town-city=Dar es Salaam,<br /> |CSDMS meeting coauthor country=Tanzania<br /> |CSDMS meeting coauthor email address=saria.elifuraha@gmail.com<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Kang-Hyeun<br /> |CSDMS meeting coauthor last name abstract=Ji<br /> |CSDMS meeting coauthor institute / Organization=KIGAM,<br /> |CSDMS meeting coauthor town-city=Daejeon,<br /> |CSDMS meeting coauthor country=Korea, South<br /> |CSDMS meeting coauthor email address=khji@kigam.re.kr<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Kelsey<br /> |CSDMS meeting coauthor last name abstract=Popolizio<br /> |CSDMS meeting coauthor institute / Organization=Virginia Tech,<br /> |CSDMS meeting coauthor town-city=Blacksburg,<br /> |CSDMS meeting coauthor country=United States<br /> |State=Virginia<br /> |CSDMS meeting coauthor email address=kelspop@vt.edu<br /> }}<br /> {{CSDMS meeting abstract template 2022<br /> |CSDMS meeting abstract=The active volcano Ol Doinyo Lengai is located in the magma-rich southern Eastern Branch of the East African Rift and erupts unique low-temperature carbonatites. Between 2007 and 2010, the volcano had several explosions and erupted with ash falls, and lava flows (VEI 3) that caused damage to the nearby communities. Although this volcano has been studied for decades, its plumbing system is still poorly understood, in part, because of the lack of precise observations of surface deformation during periods of quiet and unrest. This study investigates the volcanic plumbing system of Ol Doinyo Lengai and surroundings using data from the permanent Global Navigation Satellite System (GNSS) network monitoring the volcano called TZVOLCANO and Interferometric Synthetic Aperture Radar (InSAR) observations. We calculate velocities for 6 continuously operating GNSS sites distributed around Ol Doinyo Lengai for a timespan between 2016 and 2021 and also process InSAR data for nearly the same time-period to constrain surface motions. We then use the GNSS deformation signals and InSAR observations to solve for magma sources embedded in a homogeneous and elastic half space using the USGS inversion code dMODELS. Both GNSS and InSAR inversion results quantify a deflating spherical geometry source at a depth of ~1.3 km with a volume change ∆V of -0.05 ± 0.01x106m3 located east of Ol Doinyo Lengai and southwest of the dormant volcano Gelai. InSAR inversions alone also suggest a closing dike model at a depth of ~9 km similar to the location resolved for the 2007 Ol Doinyo Lengai dike. This work suggests a shallow magma reservoir exists east of Ol Doinyo Lengai and that the 2007 dike is actively contracting. This magma source influences the onset, size, duration and hazard of eruptions of the volcano, and plays a significant role in triggering slip on border faults during early phases of continental rifting through stress transfer.<br /> }}<br /> {{blank line template}}</div>

Daud https://csdms.colorado.edu/csdms_wiki/index.php?title=2022_CSDMS_meeting-070&diff=415622 2022-03-04T02:53:46Z

<p>Daud: </p> <hr /> <div>{{CSDMS meeting personal information template-2022<br /> |CSDMS meeting first name=Ntambila Simon<br /> |CSDMS meeting last name=Daud Masungulwa<br /> |CSDMS Pronouns=he/him<br /> |CSDMS meeting institute=Virginia Tech<br /> |CSDMS meeting city=Blacksburg<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Virginia<br /> |CSDMS meeting email address=dntambila@vt.edu<br /> |CSDMS meeting phone=5409981557<br /> }}<br /> {{CSDMS meeting select clinics1 2022<br /> |CSDMS_meeting_select_clinics1_2022=1) Environmental seismology and distributed acoustic sensing (DAS)<br /> }}<br /> {{CSDMS meeting select clinics2 2022<br /> |CSDMS_meeting_select_clinics2_2022=1) Modeling Water Movement and Reservoir Operations with mosartwmpy<br /> }}<br /> {{CSDMS meeting select clinics3 2022<br /> |CSDMS_meeting_select_clinics3_2022=1) Component Creation with Landlab<br /> }}<br /> {{CSDMS meeting abstract yes no 2022<br /> |CSDMS meeting abstract submit=Yes<br /> }}<br /> {{CSDMS meeting abstract title temp2022<br /> |CSDMS meeting abstract title=Elucidating the Magma Plumbing System of the Active Volcano Ol Doinyo Lengai, Natron Rift, Tanzania Using Geodesy and Numerical Modeling<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Geodynamics Focus Research Group<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=D. Sarah<br /> |CSDMS meeting coauthor last name abstract=Stamps<br /> |CSDMS meeting coauthor institute / Organization=Virginia Tech,<br /> |CSDMS meeting coauthor town-city=Blacksburg,<br /> |CSDMS meeting coauthor country=United States<br /> |State=Virginia<br /> |CSDMS meeting coauthor email address=dstamps@vt.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Maurizio<br /> |CSDMS meeting coauthor last name abstract=Battaglia<br /> |CSDMS meeting coauthor institute / Organization=The University of Rome, Italy<br /> |CSDMS meeting coauthor town-city=Rome<br /> |CSDMS meeting coauthor country=Italy<br /> |CSDMS meeting coauthor email address=maurizio.battaglia@uniroma1.it<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Mong-Han<br /> |CSDMS meeting coauthor last name abstract=Huang<br /> |CSDMS meeting coauthor institute / Organization=University of Maryland,<br /> |CSDMS meeting coauthor town-city=College Park,<br /> |CSDMS meeting coauthor country=United States<br /> |State=Maryland<br /> |CSDMS meeting coauthor email address=mhhuang@umd.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Elifuraha<br /> |CSDMS meeting coauthor last name abstract=Saria<br /> |CSDMS meeting coauthor institute / Organization=Ardhi University,<br /> |CSDMS meeting coauthor town-city=Dar es Salaam,<br /> |CSDMS meeting coauthor country=Tanzania<br /> |CSDMS meeting coauthor email address=saria.elifuraha@gmail.com<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Kang-Hyeun<br /> |CSDMS meeting coauthor last name abstract=Ji<br /> |CSDMS meeting coauthor institute / Organization=KIGAM,<br /> |CSDMS meeting coauthor town-city=Daejeon,<br /> |CSDMS meeting coauthor country=Korea, South<br /> |CSDMS meeting coauthor email address=khji@kigam.re.kr<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Kelsey<br /> |CSDMS meeting coauthor last name abstract=Popolizio<br /> |CSDMS meeting coauthor institute / Organization=Virginia Tech,<br /> |CSDMS meeting coauthor town-city=Blacksburg,<br /> |CSDMS meeting coauthor country=United States<br /> |State=Virginia<br /> |CSDMS meeting coauthor email address=kelspop@vt.edu<br /> }}<br /> {{CSDMS meeting abstract template 2022<br /> |CSDMS meeting abstract=The active volcano Ol Doinyo Lengai is located in the magma-rich southern Eastern Branch of the East African Rift and erupts unique low-temperature carbonatites. Between 2007 and 2010, the volcano had several explosions and erupted with ash falls, and lava flows (VEI 3) that caused damage to the nearby communities. Although this volcano has been studied for decades, its plumbing system is still poorly understood, in part, because of the lack of precise observations of surface deformation during periods of quiet and unrest. This study investigates the volcanic plumbing system of Ol Doinyo Lengai and surroundings using data from the permanent Global Navigation Satellite System (GNSS) network monitoring the volcano called TZVOLCANO and Interferometric Synthetic Aperture Radar (InSAR) observations. We calculate velocities for 6 continuously operating GNSS sites distributed around Ol Doinyo Lengai for a timespan between 2016 and 2021 and also process InSAR data for nearly the same time-period to constrain surface motions. We then use the GNSS deformation signals and InSAR observations to solve for magma sources embedded in a homogeneous and elastic half space using the USGS inversion code dMODELS. Both GNSS and InSAR inversion results quantify a deflating spherical geometry source at a depth of ~1.3 km with a volume change ∆V of -0.05 ± 0.01x106m3 located east of Ol Doinyo Lengai and southwest of the dormant volcano Gelai. InSAR inversions alone also suggest a closing dike model at a depth of ~9 km similar to the location resolved for the 2007 Ol Doinyo Lengai dike. This work suggests a shallow magma reservoir exists east of Ol Doinyo Lengai and that the 2007 dike is actively contracting. This magma source influences the onset, size, duration and hazard of eruptions of the volcano, and plays a significant role in triggering slip on border faults during early phases of continental rifting through stress transfer.<br /> }}<br /> {{blank line template}}</div>

Daud https://csdms.colorado.edu/csdms_wiki/index.php?title=2022_CSDMS_meeting-070&diff=415621 2022-03-04T02:51:58Z

<p>Daud: </p> <hr /> <div>{{CSDMS meeting personal information template-2022<br /> |CSDMS meeting first name=Ntambila Simon<br /> |CSDMS meeting last name=Daud Masungulwa<br /> |CSDMS Pronouns=he/him<br /> |CSDMS meeting institute=Virginia Tech<br /> |CSDMS meeting city=Blacksburg<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Virginia<br /> |CSDMS meeting email address=dntambila@vt.edu<br /> |CSDMS meeting phone=5409981557<br /> }}<br /> {{CSDMS meeting select clinics1 2022<br /> |CSDMS_meeting_select_clinics1_2022=1) Environmental seismology and distributed acoustic sensing (DAS)<br /> }}<br /> {{CSDMS meeting select clinics2 2022<br /> |CSDMS_meeting_select_clinics2_2022=1) Modeling Water Movement and Reservoir Operations with mosartwmpy<br /> }}<br /> {{CSDMS meeting select clinics3 2022<br /> |CSDMS_meeting_select_clinics3_2022=1) Component Creation with Landlab<br /> }}<br /> {{CSDMS meeting abstract yes no 2022<br /> |CSDMS meeting abstract submit=Yes<br /> }}<br /> {{CSDMS meeting abstract title temp2022<br /> |CSDMS meeting abstract title=Elucidating the Magma Plumbing System of the Active Volcano Ol Doinyo Lengai, Natron Rift, Tanzania Using Geodesy and Numerical Modeling<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Geodynamics Focus Research Group<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=D. Sarah<br /> |CSDMS meeting coauthor last name abstract=Stamps<br /> |CSDMS meeting coauthor institute / Organization=Virginia Tech<br /> |CSDMS meeting coauthor town-city=Blacksburg<br /> |CSDMS meeting coauthor country=United States<br /> |State=Virginia<br /> |CSDMS meeting coauthor email address=dstamps@vt.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Maurizio<br /> |CSDMS meeting coauthor last name abstract=Battaglia<br /> |CSDMS meeting coauthor institute / Organization=The University of Rome, Italy<br /> |CSDMS meeting coauthor town-city=Rome<br /> |CSDMS meeting coauthor country=Italy<br /> |CSDMS meeting coauthor email address=maurizio.battaglia@uniroma1.it<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Mong-Han<br /> |CSDMS meeting coauthor last name abstract=Huang<br /> |CSDMS meeting coauthor institute / Organization=University of Maryland<br /> |CSDMS meeting coauthor town-city=College Park<br /> |CSDMS meeting coauthor country=United States<br /> |State=Maryland<br /> |CSDMS meeting coauthor email address=mhhuang@umd.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Elifuraha<br /> |CSDMS meeting coauthor last name abstract=Saria<br /> |CSDMS meeting coauthor institute / Organization=Ardhi University<br /> |CSDMS meeting coauthor town-city=Dar es Salaam<br /> |CSDMS meeting coauthor country=Tanzania<br /> |CSDMS meeting coauthor email address=saria.elifuraha@gmail.com<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Kang-Hyeun<br /> |CSDMS meeting coauthor last name abstract=Ji<br /> |CSDMS meeting coauthor institute / Organization=KIGAM<br /> |CSDMS meeting coauthor town-city=Daejeon<br /> |CSDMS meeting coauthor country=Korea, South<br /> |CSDMS meeting coauthor email address=khji@kigam.re.kr<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Kelsey<br /> |CSDMS meeting coauthor last name abstract=Popolizio<br /> |CSDMS meeting coauthor institute / Organization=Virginia Tech<br /> |CSDMS meeting coauthor town-city=Blacksburg<br /> |CSDMS meeting coauthor country=United States<br /> |State=Virginia<br /> |CSDMS meeting coauthor email address=kelspop@vt.edu<br /> }}<br /> {{CSDMS meeting abstract template 2022<br /> |CSDMS meeting abstract=The active volcano Ol Doinyo Lengai is located in the magma-rich southern Eastern Branch of the East African Rift and erupts unique low-temperature carbonatites. Between 2007 and 2010, the volcano had several explosions and erupted with ash falls, and lava flows (VEI 3) that caused damage to the nearby communities. Although this volcano has been studied for decades, its plumbing system is still poorly understood, in part, because of the lack of precise observations of surface deformation during periods of quiet and unrest. This study investigates the volcanic plumbing system of Ol Doinyo Lengai and surroundings using data from the permanent Global Navigation Satellite System (GNSS) network monitoring the volcano called TZVOLCANO and Interferometric Synthetic Aperture Radar (InSAR) observations. We calculate velocities for 6 continuously operating GNSS sites distributed around Ol Doinyo Lengai for a timespan between 2016 and 2021 and also process InSAR data for nearly the same time-period to constrain surface motions. We then use the GNSS deformation signals and InSAR observations to solve for magma sources embedded in a homogeneous and elastic half space using the USGS inversion code dMODELS. Both GNSS and InSAR inversion results quantify a deflating spherical geometry source at a depth of ~1.3 km with a volume change ∆V of -0.05 ± 0.01x106m3 located east of Ol Doinyo Lengai and southwest of the dormant volcano Gelai. InSAR inversions alone also suggest a closing dike model at a depth of ~9 km similar to the location resolved for the 2007 Ol Doinyo Lengai dike. This work suggests a shallow magma reservoir exists east of Ol Doinyo Lengai and that the 2007 dike is actively contracting. This magma source influences the onset, size, duration and hazard of eruptions of the volcano, and plays a significant role in triggering slip on border faults during early phases of continental rifting through stress transfer.<br /> }}<br /> {{blank line template}}</div>

Daud https://csdms.colorado.edu/csdms_wiki/index.php?title=2022_CSDMS_meeting-070&diff=415620 2022-03-04T02:50:24Z

<p>Daud: </p> <hr /> <div>{{CSDMS meeting personal information template-2022<br /> |CSDMS meeting first name=Ntambila Simon<br /> |CSDMS meeting last name=Daud Masungulwa<br /> |CSDMS Pronouns=he/him<br /> |CSDMS meeting institute=Virginia Tech<br /> |CSDMS meeting city=Blacksburg<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Virginia<br /> |CSDMS meeting email address=dntambila@vt.edu<br /> |CSDMS meeting phone=5409981557<br /> }}<br /> {{CSDMS meeting select clinics1 2022<br /> |CSDMS_meeting_select_clinics1_2022=1) Environmental seismology and distributed acoustic sensing (DAS)<br /> }}<br /> {{CSDMS meeting select clinics2 2022<br /> |CSDMS_meeting_select_clinics2_2022=1) Modeling Water Movement and Reservoir Operations with mosartwmpy<br /> }}<br /> {{CSDMS meeting select clinics3 2022<br /> |CSDMS_meeting_select_clinics3_2022=1) Component Creation with Landlab<br /> }}<br /> {{CSDMS meeting abstract yes no 2022<br /> |CSDMS meeting abstract submit=Yes<br /> }}<br /> {{CSDMS meeting abstract title temp2022<br /> |CSDMS meeting abstract title=Elucidating the Magma Plumbing System of the Active Volcano Ol Doinyo Lengai, Natron Rift, Tanzania Using Geodesy and Numerical Modeling<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Geodynamics Focus Research Group<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=D. Sarah<br /> |CSDMS meeting coauthor last name abstract=Stamps<br /> |CSDMS meeting coauthor institute / Organization=Virginia Tech<br /> |CSDMS meeting coauthor town-city=Blacksburg<br /> |CSDMS meeting coauthor country=United States<br /> |State=Virginia<br /> |CSDMS meeting coauthor email address=dstamps@vt.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Maurizio<br /> |CSDMS meeting coauthor last name abstract=Battaglia<br /> |CSDMS meeting coauthor institute / Organization=The University of Rome, Italy<br /> |CSDMS meeting coauthor town-city=Rome<br /> |CSDMS meeting coauthor country=Italy<br /> |CSDMS meeting coauthor email address=maurizio.battaglia@uniroma1.it<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Mong-Han<br /> |CSDMS meeting coauthor last name abstract=Huang<br /> |CSDMS meeting coauthor institute / Organization=University of Maryland, College Park<br /> |CSDMS meeting coauthor town-city=Maryland<br /> |CSDMS meeting coauthor country=United States<br /> |State=Maryland<br /> |CSDMS meeting coauthor email address=mhhuang@umd.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Elifuraha<br /> |CSDMS meeting coauthor last name abstract=Saria<br /> |CSDMS meeting coauthor institute / Organization=Ardhi University<br /> |CSDMS meeting coauthor town-city=Dar es Salaam<br /> |CSDMS meeting coauthor country=Tanzania<br /> |CSDMS meeting coauthor email address=saria.elifuraha@gmail.com<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Kang-Hyeun<br /> |CSDMS meeting coauthor last name abstract=Ji<br /> |CSDMS meeting coauthor institute / Organization=KIGAM<br /> |CSDMS meeting coauthor town-city=Daejeon<br /> |CSDMS meeting coauthor country=Korea, South<br /> |CSDMS meeting coauthor email address=khji@kigam.re.kr<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Kelsey<br /> |CSDMS meeting coauthor last name abstract=Popolizio<br /> |CSDMS meeting coauthor institute / Organization=Virginia Tech<br /> |CSDMS meeting coauthor town-city=Blacksburg<br /> |CSDMS meeting coauthor country=United States<br /> |State=Virginia<br /> |CSDMS meeting coauthor email address=kelspop@vt.edu<br /> }}<br /> {{CSDMS meeting abstract template 2022<br /> |CSDMS meeting abstract=The active volcano Ol Doinyo Lengai is located in the magma-rich southern Eastern Branch of the East African Rift and erupts unique low-temperature carbonatites. Between 2007 and 2010, the volcano had several explosions and erupted with ash falls, and lava flows (VEI 3) that caused damage to the nearby communities. Although this volcano has been studied for decades, its plumbing system is still poorly understood, in part, because of the lack of precise observations of surface deformation during periods of quiet and unrest. This study investigates the volcanic plumbing system of Ol Doinyo Lengai and surroundings using data from the permanent Global Navigation Satellite System (GNSS) network monitoring the volcano called TZVOLCANO and Interferometric Synthetic Aperture Radar (InSAR) observations. We calculate velocities for 6 continuously operating GNSS sites distributed around Ol Doinyo Lengai for a timespan between 2016 and 2021 and also process InSAR data for nearly the same time-period to constrain surface motions. We then use the GNSS deformation signals and InSAR observations to solve for magma sources embedded in a homogeneous and elastic half space using the USGS inversion code dMODELS. Both GNSS and InSAR inversion results quantify a deflating spherical geometry source at a depth of ~1.3 km with a volume change ∆V of -0.05 ± 0.01x106m3 located east of Ol Doinyo Lengai and southwest of the dormant volcano Gelai. InSAR inversions alone also suggest a closing dike model at a depth of ~9 km similar to the location resolved for the 2007 Ol Doinyo Lengai dike. This work suggests a shallow magma reservoir exists east of Ol Doinyo Lengai and that the 2007 dike is actively contracting. This magma source influences the onset, size, duration and hazard of eruptions of the volcano, and plays a significant role in triggering slip on border faults during early phases of continental rifting through stress transfer.<br /> }}<br /> {{blank line template}}</div>

Daud https://csdms.colorado.edu/csdms_wiki/index.php?title=2022_CSDMS_meeting-070&diff=415619 2022-03-04T02:49:31Z

<p>Daud: Created page with &quot;{{CSDMS meeting personal information template-2022 |CSDMS meeting first name=Ntambila Simon |CSDMS meeting last name=Masungulwa |CSDMS Pronouns=he/him |CSDMS meeting institute...&quot;</p> <hr /> <div>{{CSDMS meeting personal information template-2022<br /> |CSDMS meeting first name=Ntambila Simon<br /> |CSDMS meeting last name=Masungulwa<br /> |CSDMS Pronouns=he/him<br /> |CSDMS meeting institute=Virginia Tech<br /> |CSDMS meeting city=Blacksburg<br /> |CSDMS meeting country=United States<br /> |CSDMS meeting state=Virginia<br /> |CSDMS meeting email address=dntambila@vt.edu<br /> |CSDMS meeting phone=5409981557<br /> }}<br /> {{CSDMS meeting select clinics1 2022<br /> |CSDMS_meeting_select_clinics1_2022=1) Environmental seismology and distributed acoustic sensing (DAS)<br /> }}<br /> {{CSDMS meeting select clinics2 2022<br /> |CSDMS_meeting_select_clinics2_2022=1) Modeling Water Movement and Reservoir Operations with mosartwmpy<br /> }}<br /> {{CSDMS meeting select clinics3 2022<br /> |CSDMS_meeting_select_clinics3_2022=1) Component Creation with Landlab<br /> }}<br /> {{CSDMS meeting abstract yes no 2022<br /> |CSDMS meeting abstract submit=Yes<br /> }}<br /> {{CSDMS meeting abstract title temp2022<br /> |CSDMS meeting abstract title=Elucidating the Magma Plumbing System of the Active Volcano Ol Doinyo Lengai, Natron Rift, Tanzania Using Geodesy and Numerical Modeling<br /> |Working_group_member_WG_FRG=Terrestrial Working Group, Geodynamics Focus Research Group<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=D. Sarah<br /> |CSDMS meeting coauthor last name abstract=Stamps<br /> |CSDMS meeting coauthor institute / Organization=Virginia Tech<br /> |CSDMS meeting coauthor town-city=Blacksburg<br /> |CSDMS meeting coauthor country=United States<br /> |State=Virginia<br /> |CSDMS meeting coauthor email address=dstamps@vt.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Maurizio<br /> |CSDMS meeting coauthor last name abstract=Battaglia<br /> |CSDMS meeting coauthor institute / Organization=The University of Rome, Italy<br /> |CSDMS meeting coauthor town-city=Rome<br /> |CSDMS meeting coauthor country=Italy<br /> |CSDMS meeting coauthor email address=maurizio.battaglia@uniroma1.it<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Mong-Han<br /> |CSDMS meeting coauthor last name abstract=Huang<br /> |CSDMS meeting coauthor institute / Organization=University of Maryland, College Park<br /> |CSDMS meeting coauthor town-city=Maryland<br /> |CSDMS meeting coauthor country=United States<br /> |State=Maryland<br /> |CSDMS meeting coauthor email address=mhhuang@umd.edu<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Elifuraha<br /> |CSDMS meeting coauthor last name abstract=Saria<br /> |CSDMS meeting coauthor institute / Organization=Ardhi University<br /> |CSDMS meeting coauthor town-city=Dar es Salaam<br /> |CSDMS meeting coauthor country=Tanzania<br /> |CSDMS meeting coauthor email address=saria.elifuraha@gmail.com<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Kang-Hyeun<br /> |CSDMS meeting coauthor last name abstract=Ji<br /> |CSDMS meeting coauthor institute / Organization=KIGAM<br /> |CSDMS meeting coauthor town-city=Daejeon<br /> |CSDMS meeting coauthor country=Korea, South<br /> |CSDMS meeting coauthor email address=khji@kigam.re.kr<br /> }}<br /> {{CSDMS meeting authors template<br /> |CSDMS meeting coauthor first name abstract=Kelsey<br /> |CSDMS meeting coauthor last name abstract=Popolizio<br /> |CSDMS meeting coauthor institute / Organization=Virginia Tech<br /> |CSDMS meeting coauthor town-city=Blacksburg<br /> |CSDMS meeting coauthor country=United States<br /> |State=Virginia<br /> |CSDMS meeting coauthor email address=kelspop@vt.edu<br /> }}<br /> {{CSDMS meeting abstract template 2022<br /> |CSDMS meeting abstract=The active volcano Ol Doinyo Lengai is located in the magma-rich southern Eastern Branch of the East African Rift and erupts unique low-temperature carbonatites. Between 2007 and 2010, the volcano had several explosions and erupted with ash falls, and lava flows (VEI 3) that caused damage to the nearby communities. Although this volcano has been studied for decades, its plumbing system is still poorly understood, in part, because of the lack of precise observations of surface deformation during periods of quiet and unrest. This study investigates the volcanic plumbing system of Ol Doinyo Lengai and surroundings using data from the permanent Global Navigation Satellite System (GNSS) network monitoring the volcano called TZVOLCANO and Interferometric Synthetic Aperture Radar (InSAR) observations. We calculate velocities for 6 continuously operating GNSS sites distributed around Ol Doinyo Lengai for a timespan between 2016 and 2021 and also process InSAR data for nearly the same time-period to constrain surface motions. We then use the GNSS deformation signals and InSAR observations to solve for magma sources embedded in a homogeneous and elastic half space using the USGS inversion code dMODELS. Both GNSS and InSAR inversion results quantify a deflating spherical geometry source at a depth of ~1.3 km with a volume change ∆V of -0.05 ± 0.01x106m3 located east of Ol Doinyo Lengai and southwest of the dormant volcano Gelai. InSAR inversions alone also suggest a closing dike model at a depth of ~9 km similar to the location resolved for the 2007 Ol Doinyo Lengai dike. This work suggests a shallow magma reservoir exists east of Ol Doinyo Lengai and that the 2007 dike is actively contracting. This magma source influences the onset, size, duration and hazard of eruptions of the volcano, and plays a significant role in triggering slip on border faults during early phases of continental rifting through stress transfer.<br /> }}<br /> {{blank line template}}</div>

Daud https://csdms.colorado.edu/csdms_wiki/index.php?title=User:Daud&diff=415618 2022-03-04T00:57:48Z

<p>Daud: Created page with &quot;{{Signup information member |First name member=Ntambila Simon |Last name member=Daud Masungulwa |Pronouns=he/him |Picture member=Daud Ntambila.jpg |Institute member=Virginia T...&quot;</p> <hr /> <div>{{Signup information member<br /> |First name member=Ntambila Simon<br /> |Last name member=Daud Masungulwa<br /> |Pronouns=he/him<br /> |Picture member=Daud Ntambila.jpg<br /> |Institute member=Virginia Tech<br /> |Department member=Geosciences<br /> |Postal address 1 member=Virginia Tech, Department of Geosciences , 926 West Campus Drive (MC0420) 4044, Derring Hall, Blacksburg, VA 24061 USA<br /> |Postal address 2 member=806 Claytor Square<br /> |City member=Blacksburg<br /> |Postal code member=24060<br /> |Country member=United States<br /> |State member=Virginia<br /> |Confirm email member=dntambila@vt.edu<br /> |Work phone member=5409981557<br /> |Cell phone member=5409981557<br /> |Working group member=Terrestrial Working Group, Coastal Working Group, Marine Working Group, Education and Knowledge Transfer (EKT) Working Group, Cyberinformatics and Numerics Working Group, Hydrology Focus Research Group, Carbonates and Biogenics Focus Research Group, Chesapeake Focus Research Group, Critical Zone Focus Research Group, Human Dimensions Focus Research Group, Geodynamics Focus Research Group, Ecosystem Dynamics Focus Research Group, Coastal Vulnerability Initiative, Continental Margin Initiative, Artificial Intelligence &amp; Machine Learning Initiative, Modeling Platform Interoperability Initiative, River Network Modeling Initiative<br /> |Emaillist group member=yes<br /> |Description of your CSDMS-related interests member=I am interested to work with CSDMS in assisting communities prone to vulnerable and hazards areas such as volcanic eruption, climate change, sea level changes<br /> |Memberagreement=I have read and agree to the Privacy Policy<br /> }}</div>

Daud https://csdms.colorado.edu/csdms_wiki/index.php?title=File:Daud_Ntambila.jpg&diff=415617 2022-03-04T00:37:30Z

<p>Daud: </p> <hr /> <div></div>

Daud