Vertical Land Motion - Tutuila and Aunuu, American Samoa
Land subsidence rates across Tutuila and Aunuu are drawn from recent work by Huang et al. (2022) showing that the average rate of subsidence on these islands is spatially variable and ranges from 6 to 9 mm/yr. The study analyzed all available radar data from the European Space Agency (ESA) Sentinel-1 satellite, which covers Tutuila and Aunuu only, and derived an average subsidence rate for the 6-year period between September 2015 to December 2022. Data are available over areas where radar data was successfully used to retrieve unambiguous measurements. Vertical land motion (VLM) measurements are provided by this data layer in millimeters per year (mm/yr), with negative values indicating land subsidence.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| contactPoint |
{
"fn": "NASA Goddard Space Flight Center (GSFC)",
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|
| describedByType | application/octet-steam |
| description | Land subsidence rates across Tutuila and Aunuu are drawn from recent work by Huang et al. (2022) showing that the average rate of subsidence on these islands is spatially variable and ranges from 6 to 9 mm/yr. The study analyzed all available radar data from the European Space Agency (ESA) Sentinel-1 satellite, which covers Tutuila and Aunuu only, and derived an average subsidence rate for the 6-year period between September 2015 to December 2022. Data are available over areas where radar data was successfully used to retrieve unambiguous measurements. Vertical land motion (VLM) measurements are provided by this data layer in millimeters per year (mm/yr), with negative values indicating land subsidence. |
| distribution |
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|
| identifier | as_nasa_tutma_vlm |
| isPartOf | Pacific Islands Ocean Observing System (PacIOOS) |
| issued | 2022-11-23T00:00:00.000+00:00 |
| keyword |
[
"Earth Science > Human Dimensions > Natural Hazards > Land Subsidence",
"Earth Science > Land Surface > Geomorphic Landforms/Processes > Coastal Processes > Subsidence",
"Earth Science > Solid Earth > Geomorphic Landforms/Processes > Coastal Processes > Subsidence",
"Ocean > Pacific Ocean > South Pacific Ocean > Polynesia > American Samoa > Aunuu",
"Ocean > Pacific Ocean > South Pacific Ocean > Polynesia > American Samoa > Tutuila",
"PacIOOS > Pacific Islands Ocean Observing System",
"PacIOOS > Pacific Islands Ocean Observing System"
]
|
| landingPage | https://ael.gsfc.nasa.gov/sci/bio/stacey.a.huang |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2022-11-23T00:00:00.000+00:00 |
| publisher |
{
"name": "Pacific Islands Ocean Observing System (PacIOOS)",
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|
| spatial | -170.55930555543,-14.37347222677,-170.84736111329,-14.23069444785 |
| title | Vertical Land Motion - Tutuila and Aunuu, American Samoa |
