Meeting:Abstract 2013 CSDMS meeting-071: Difference between revisions
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|CSDMS meeting first name=Stephanie | |CSDMS meeting first name=Stephanie | ||
|CSDMS meeting last name=Higgins | |CSDMS meeting last name=Higgins | ||
|CSDMS meeting institute=INSTAAR | |CSDMS meeting institute=CSDMS/INSTAAR | ||
|CSDMS meeting city=Boulder | |CSDMS meeting city=Boulder | ||
|CSDMS meeting country=United States | |CSDMS meeting country=United States | ||
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|CSDMS meeting coauthor first name abstract=Irina | |CSDMS meeting coauthor first name abstract=Irina | ||
|CSDMS meeting coauthor last name abstract=Overeem | |CSDMS meeting coauthor last name abstract=Overeem | ||
|CSDMS meeting coauthor institute / Organization=INSTAAR | |CSDMS meeting coauthor institute / Organization=CSDMS/INSTAAR | ||
|CSDMS meeting coauthor country=United States | |CSDMS meeting coauthor country=United States | ||
|State=Colorado | |State=Colorado | ||
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|CSDMS meeting coauthor institute / Organization=AIST | |CSDMS meeting coauthor institute / Organization=AIST | ||
|CSDMS meeting coauthor country=Japan | |CSDMS meeting coauthor country=Japan | ||
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|CSDMS meeting coauthor first name abstract=James | |CSDMS meeting coauthor first name abstract=James | ||
|CSDMS meeting coauthor last name abstract=Syvitski | |CSDMS meeting coauthor last name abstract=Syvitski | ||
|CSDMS meeting coauthor institute / Organization=INSTAAR | |CSDMS meeting coauthor institute / Organization=CSDMS/INSTAAR | ||
|CSDMS meeting coauthor town-city=Boulder | |CSDMS meeting coauthor town-city=Boulder | ||
|CSDMS meeting coauthor country=United States | |CSDMS meeting coauthor country=United States | ||
|State=Colorado | |State=Colorado | ||
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|CSDMS meeting abstract= | |CSDMS meeting abstract=While many researchers have mapped and tracked coastal erosion in the Yellow River Delta, determining its cause has proven nearly impossible, because myriad natural and anthropogenic processes are simultaneously affecting the delta. These processes include reduced sediment supply, reduced river discharge, changing tide and current patterns, new seawalls, groundwater withdrawal, substrate compaction, oil extraction, burgeoning urban centers, and rising sea level. Here, we use Interferometric Synthetic Aperture Radar (InSAR) to map surface deformation in the delta between the years 2007 and 2011. We find that rapid, localized subsidence of up to 22 cm/y is occurring along the coast, apparently related to groundwater extraction at aquaculture facilities. This finding has important consequences for the sustainability of the local aquaculture industry. Similar subsidence may also be occurring in deltas like the Mekong, though these signals may be difficult or impossible to measure. | ||
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Latest revision as of 10:58, 22 July 2015
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Land Subsidence at Aquaculture Facilities in the Yellow River Delta, China
[[Image:|300px|right|link=File:]]While many researchers have mapped and tracked coastal erosion in the Yellow River Delta, determining its cause has proven nearly impossible, because myriad natural and anthropogenic processes are simultaneously affecting the delta. These processes include reduced sediment supply, reduced river discharge, changing tide and current patterns, new seawalls, groundwater withdrawal, substrate compaction, oil extraction, burgeoning urban centers, and rising sea level. Here, we use Interferometric Synthetic Aperture Radar (InSAR) to map surface deformation in the delta between the years 2007 and 2011. We find that rapid, localized subsidence of up to 22 cm/y is occurring along the coast, apparently related to groundwater extraction at aquaculture facilities. This finding has important consequences for the sustainability of the local aquaculture industry. Similar subsidence may also be occurring in deltas like the Mekong, though these signals may be difficult or impossible to measure.