HR: 16:45h
AN: H14B-04    [Abstracts]
TI: ASTER Observations of the Elephant Butte Reservoir in New Mexico
AU: * Bleiweiss, M
EM: mbleiwei@taipan.nmsu.edu
AF: New Mexico State University, P.O. Box 30003 MSC 3BE, Las Cruces, NM 88003-8003
AU: Schmugge, T
EM: schmugge@nmsu.edu
AF: New Mexico State University, P.O. Box 30003 MSC 3BE, Las Cruces, NM 88003-8003
AB: Since the launch of NASA's Terra satellite in December 1999 the ASTER instrument has made more that 2 dozen of observations of the Elephant Butte Reservoir located on the Rio Grande river in central New Mexico. The first observations were in June 2000 and the most recent were in May 2005. This period includes low water levels resulting from the the recent drought conditions and the earlier full high water conditions in 2000. There was about a 30 m change in water level during this time. The area of the reservoir was estimated for each of these scenes and compared the with known water levels. The ASTER data were the Level 2 products which include both the visible reflectance and the thermal infrared (surface temperature). Both spectral regions provide good contrasts between water and surrounding land. This contrast makes the area estimation straightforward. there was a large range in surface water area observed from 30,000 km*2 to more than 75,000 km*2. An approximately linear relation between area and water level was found.
DE: 1807 Climate impacts
DE: 1833 Hydroclimatology
DE: 1855 Remote sensing (1640)
DE: 1857 Reservoirs (surface)
DE: 1895 Instruments and techniques: monitoring
SC: Hydrology [H]
MN: Fall Meeting 2005