Collaborative Research: Submarine Earthquake Geology in the Marmara Seismic Gap

合作研究：马尔马拉地震间隙的海底地震地质学

• 批准号: 0096668
• 负责人: Marie-Helene Cormier
• 金额: $ 11.1万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-04-01 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0096668&HistoricalAwards=false
• 关键词: Collaborative; Research; Submarine; Earthquake; Geology

The 1600-km-long North Anatolian transform fault across northern Turkey has been repturing from east to west in a series of large earthquakes during the past 60 years. The rupture front advanced 160 km westward in 1999 in two disastrous earthquakes. The next rupture is expected to occur within the next few decades benearth the Marmara Sea. In October 2000, the shelf and adjacent slope of the northeastern Marmara Sea were charted using multibeam bathymetry and backscatter technology. The goal was to resolve the planview geometry of seismogenic fault strands, and to identify any related features such as mass-wasting deposits, sand blows, mud volcanoes, and degassing craters.

过去60年来，横跨土耳其北部、长达1600公里的北安纳托利亚转换断层在一系列大地震中不断从东向西断裂。 1999年两次灾难性地震中，破裂前沿向西推进了160公里。 预计下一次破裂将在未来几十年内发生在马尔马拉海下方。 2000年10月，利用多波束测深和反向散射技术绘制了马尔马拉海东北部的陆架和邻近斜坡的图表。 目标是解析发震断层带的平面几何形状，并识别任何相关特征，例如大量浪费的沉积物、风沙、泥火山和排气坑。