Crustal Dynamics Research in Western North America: Data Acquisition for the WInSAR Consortium

0425887约旦这笔赠款用于支持北美西部干涉合成孔径雷达（WinSAR）财团继续从欧洲航天局（ESA）集体购买合成孔径雷达（SAR）图像。 美国目前还没有民用SAR卫星能力。 自2000财政年度以来，联合国开发计划署一直支持WinSAR联合体允许集体购买SAR数据，并通过档案系统向WinSAR联合体成员提供这些数据。 目前有25个WinSAR成员组织。 WinSAR现在通过斯克里普斯海洋学研究所（SIO）、加州理工学院和斯坦福大学的档案保存着2000多个SAR场景。 这一支持将增加WinSAR的持有量。 欧空局ERS-1/2和Envisat卫星的单个合成孔径雷达图像将通过以下方式购买：1）直接从欧空局购买-要求接受提交给欧空局的科学建议;或2）通过欧空局批准的数据转售商（例如，Eurimage或Spotimage）购买。 通过WinSAR档案提供的合成孔径雷达图像已被用于干涉分析，以提供地壳变形模式的空间连续图像，这是对离散全球定位系统测量的自然补充。 WinSAR联盟成员科学家使用干涉合成孔径雷达图像对北美西部活动断层周围的应变积累和释放进行了新的深入了解（例如，圣安德烈亚斯转换断层系统），并集中研究大地震震中周围的同震和震后变形模式（例如，1999 Hector Mine Mw 7.2和1992 Landers Mw 7.3）。 干涉合成孔径雷达图像还使人们能够深入了解与石油和地下水开采有关的火山系统和地面沉降的动态。 ***

0425887JordanThis grant supports continued group purchases of synthetic aperture radar (SAR) imagery from the European Space Agency (ESA) by the Western North America Interferometric SAR (WinSAR) consortium. The U.S. currently has no civilian SAR satellite capability. Since FY 2000, EAR has supported the WinSAR consortium to allow for group purchase of SAR data and to make those data available to WinSAR consortium members through an archival system. Currently there are 25 WinSAR member organizations. WinSAR now maintains over 2000 SAR scenes through archives at Scripps Institution of Oceanography (SIO), Caltech, and Stanford. This support will increase the WinSAR holdings. Individual SAR scenes from the ESA ERS-1/2 and Envisat satellites will be purchased either: 1) directly from ESA - requires that a science proposal submitted to ESA be accepted; or 2) through ESA sanctioned re-sellers of the data (e.g, Eurimage or Spotimage). SAR imagery available through the WinSAR archive has been used for interferometric analysis to provide for spatially continuous images of crustal deformation patterns that are a natural complement to discrete GPS measurements. InSAR imagery has been used by WinSAR consortium member scientists to gain new insight into strain accumulation and release surrounding active faults in western North America (e.g., the San Andreas transform fault system) and for focused studies of co-seismic and post-seismic deformation patterns surrounding the epicenters of large earthquakes (e.g., 1999 Hector Mine Mw 7.2 and 1992 Landers Mw 7.3). InSAR imagery has also provided insight into the dynamics of volcanic systems and land surface subsidence related to petroleum and ground water extraction. ***