Alldata:African Sediment Yield Dataset

2014-08-01T09:46:21Z

Matthiasvanmaercke: Created page with "{{Data description |One-line data description=Measured sediment yields of African rivers |Extended data description=Dataset of measured long-term (> 1 year) average catchment..."

{{Data description
|One-line data description=Measured sediment yields of African rivers
|Extended data description=Dataset of measured long-term (> 1 year) average catchment sediment yield measurements for 683 African rivers. Measurements were either derived from observations at a gauging station or from sedimentation rates in reservoirs.

Details on the data collection procedure and qualtity assessment can be found in:
Vanmaercke M, Poesen J, Broeckx J, Nyssen J (2014) Sediment Yield in Africa. Earth-Science Reviews 136: 350–368.

When using data from this dataset, please refer to this article, as well as to the original source of the data.
|Upload image dataset=Fig1 CatchmentLocations.png
|Caption dataset image=
}}
{{Data format
|Data type=River discharge
|Data origin=Measured
|Other data format=
|Data resolution=Point data
|Data projection=latitude/longitude (WGS84)
}}
{{Dataset coverage
|Data spatial coverage=Africa
|Data temporal coverage=Time averaged
|Data time period covered=Mainly 1940-1990 (depends on the observation)
}}
{{Dataset availability
|Data download link=https://lirias.kuleuven.be/retrieve/277901/VanmaerckeEtAl2014_ESR.pdf
|Data source link=http://www.sciencedirect.com/science/article/pii/S0012825214001123
}}
{{Data references
|Key references dataset=Vanmaercke M, Poesen J, Broeckx J, Nyssen J (2014) Sediment Yield in Africa. Earth-Science Reviews 136: 350-368.
}}

File:Fig1 CatchmentLocations.png

2014-08-01T09:22:33Z

Matthiasvanmaercke: Spatial distribution of the catchment outlets for which sediment yield (SY)observations are available. GS: SY was derived from gauging station measurements. R: SY was derived from reservoir sedimentation rates.

Spatial distribution of the catchment outlets for which sediment yield (SY)observations are available. GS: SY was derived from gauging station measurements. R: SY was derived from reservoir sedimentation rates.

Meeting:Abstract 2011 CSDMS meeting-087

2011-10-07T19:12:51Z

Matthiasvanmaercke:

{{#ifeq:{{#expr:{{#time: U}}>{{#expr:
{{#expr:{{#switch: {{#sub:{{REVISIONTIMESTAMP}}|4|-8}}
| 7 = 1309478400
| 8 = 1312156800
| 9 = 1314835200
| 10 = 1317427200
}} + {{#expr:{{#sub:{{REVISIONTIMESTAMP}}|6|-6}}*24*3600}} + {{#expr:{{#sub:{{REVISIONTIMESTAMP}}|8|-4}}*3600}} + {{#expr:{{#sub:{{REVISIONTIMESTAMP}}|10|-2}} *60}} + {{#sub:{{REVISIONTIMESTAMP}}|12}} -64800}}+30 }} }}|1|{{CSDMS meeting 2011 paid}}|{{CSDMS meeting 2011 not paid}} }}<br>

{{CSDMS meeting personal information template
|CSDMS meeting first name=Matthias
|CSDMS meeting last name=Vanmaercke
|CSDMS meeting institute=K.U. Leuven
|CSDMS meeting city=Heverlee
|CSDMS meeting state=NO STATE
|CSDMS meeting country=Belgium
|CSDMS meeting email address=Matthias.Vanmaercke@ees.kuleuven.be
|CSDMS meeting phone=+32/16/32.64.20
}}
{{CSDMS meeting abstract yes no
|CSDMS meeting abstract submit=Yes
}}
{{CSDMS meeting abstract title template
|CSDMS meeting abstract title=Predicting sediment yields from undisturbed catchments: the dominant role of tectonics
}}
{{CSDMS meeting authors template
|CSDMS meeting coauthor first name abstract=Albert
|CSDMS meeting coauthor last name abstract=Kettner
|CSDMS meeting coauthor institute / Organization=CSDMS
|CSDMS meeting coauthor town-city=Boulder
|State=Colorado
|CSDMS meeting coauthor country=USA
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|CSDMS meeting coauthor first name abstract=Miet
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{{CSDMS meeting authors template
|CSDMS meeting coauthor first name abstract=Jean
|CSDMS meeting coauthor last name abstract=Poesen
|CSDMS meeting coauthor institute / Organization=K.U.Leuven - Department of Earth and Environmental Sciences
|CSDMS meeting coauthor town-city=Heverlee
|State=NO STATE
|CSDMS meeting coauthor country=Belgium
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{{CSDMS meeting authors template
|CSDMS meeting coauthor first name abstract=Gerard
|CSDMS meeting coauthor last name abstract=Govers
|CSDMS meeting coauthor institute / Organization=K.U.Leuven - Department of Earth and Environmental Sciences
|CSDMS meeting coauthor town-city=Heverlee
|State=NO STATE
|CSDMS meeting coauthor country=Belgium
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|CSDMS meeting coauthor first name abstract=Anna
|CSDMS meeting coauthor last name abstract=Mamaliga
|CSDMS meeting coauthor institute / Organization=K.U.Leuven
|CSDMS meeting coauthor town-city=Leuven
|State=NO STATE
|CSDMS meeting coauthor country=Belgium
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{{CSDMS meeting authors template
|CSDMS meeting coauthor first name abstract=Gert
|CSDMS meeting coauthor last name abstract=Verstraeten
|CSDMS meeting coauthor institute / Organization=K.U.Leuven - Department of Earth and Environmental Sciences
|CSDMS meeting coauthor town-city=Heverlee
|State=NO STATE
|CSDMS meeting coauthor country=Belgium
}}
{{CSDMS meeting authors template
|CSDMS meeting coauthor first name abstract=Maria
|CSDMS meeting coauthor last name abstract=Radoane
|CSDMS meeting coauthor institute / Organization=University of Suceava
|CSDMS meeting coauthor town-city=Suceava
|State=NO STATE
|CSDMS meeting coauthor country=Romania
}}
{{CSDMS meeting abstract template
|CSDMS meeting abstract=A major issue, hampering our understanding about the human impacts on sediment fluxes is our limited knowledge about the magnitude and controlling factors of catchment sediment yields (SY, t km-2 y-1) under ‘baseline’ conditions, i.e. the SY that could be expected from a catchment if it was unaffected by human impacts.
To address this problem, a dataset was set up with measured SY-data from 146 catchments in Europe that are little or not affected by humans in terms of land use and have no significant reservoirs, lakes, impoundments or glaciers in their upstream area. The considered catchments span a wide range in catchment areas (0.3 – 4,000km²) and observed SY-values (0.5 – 3,100 t km-2 y-1). Analyses of these data indicates that climate exerts little control on the observed range of SY-values. However, strong correlations were found between SY and average catchment slope, lithology and tectonic activity (as derived from a globally available earthquake hazard map). Based on these findings, a regression model was developed that allows predicting baseline SY. Model calibration and validation results indicate that this model is able to provide robust approximations of the baseline SY, with >95% of predictions deviating less than one order of magnitude from the measured SY-values.
This model can therefore significantly improve our understanding about the controlling factors of SY and their sensitivity to human impacts. However, it is also the first model that explicitly considers the effect of tectonic activity on catchment SY. Despite the relatively limited tectonic activity in many of these catchments, differences in earthquake sensitivity alone was found to explain already more than 40% of the observed variation in SY. Our results therefore illustrate that tectonic activity has a strong, but hitherto largely neglected, influence on SY.

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|CSDMS meeting first day choice=I can not attend a clinic
|CSDMS meeting second day choice=I can not attend a clinic
|CSDMS meeting third day choice=I can not attend a clinic
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{{CSDMS meeting logistics template
|Attend all days=No
|CSDMS arrange hotel=No
|Check in date=2011/10/28
|Check out date=2011/10/30
|Share a room=Yes
|CSDMS meeting dinner=No
|CSDMS meeting additional information=Albert will present the poster
}}

User:Matthiasvanmaercke

2011-08-08T19:48:54Z

Matthiasvanmaercke:

{{Signup information member
|First name member=Matthias
|Last name member=Vanmaercke
|Institute member=Catholic University Leuven
|Department member=Earth and Environmental Sciences
|Postal address 1 member=Celestijnenlaan 200E
|Postal address 2 member=Tower 3, floor 3
|City member=Heverlee
|Postal code member=3001
|State member=NO STATE
|Country member=BELGIUM
|Confirm email member=matthias.vanmaercke@ees.kuleuven.be
|Working group member=Terrestrial Working Group
|Description of your CSDMS-related interests member=Collaboration with Albert Kettner and James Syvitski on applying the (BQ)ART model on small river systems in Europe
|How did you learn about CSDMS member=Through publications and personal communication with Albert Kettner
}}

CSDMS - User contributions [en]

Alldata:African Sediment Yield Dataset

File:Fig1 CatchmentLocations.png

Meeting:Abstract 2011 CSDMS meeting-087

User:Matthiasvanmaercke