Coordinated Deployment of Seismic Instruments to Record Aftershocks of the September 2010 New Zealand Earthquake

协调部署地震仪器记录 2010 年 9 月新西兰地震的余震

• 批准号: 1102767
• 负责人: Clifford Thurber
• 金额: $ 3.1万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1102767&HistoricalAwards=false
• 关键词: Coordinated; Deployment; Seismic; Instruments; Record

The September 4, 2010, Darfield, New Zealand earthquake is the most damagingearthquake to strike New Zealand since the 1931 Napier Earthquake. Although no lives werelost, damage was extensive in the area, particularly in nearby Christchurch, and economic lossesare expected to total over NZ $2 billion. The earthquake is also scientifically interesting and inmany ways surprising. It occurred on a previously unmapped fault in an area that was presumedto have lower risks than other areas (e.g., the Alpine Fault). The complex source time functionindicates that two or more subevents were involved.One of the most surprising aspects is thepredominantly strike-slip character of the event along a nearly east-west fault. South Islandtectonics are dominated by the Alpine Fault system and nearby, mostly northeast-southweststriking strike slip faults, such as the Hope Fault. The data from this project will provide aunique opportunity to study a fault that is very likely quite young and immature, and thusfundamentally different in character from mature faults such as the San Andreas Fault inCalifornia or the Anatolian Fault in Turkey.New Zealand and UW-Madison scientists have deployed temporary seismic instrumentsto monitor aftershocks. The New Zealand instruments were deployed by GNS Science andVictoria University staff, led by Terry Webb and Martha Savage, respectively. PI Thurberarranged for the shipment of 9 RAMP instruments from the IRIS/PASSCAL facility toChristchurch and sent 2 UW-Madison staff to New Zealand to deploy them. 18 short-period, 9 broadband, and 3 strong motion instruments will be deployed through this joint endeavor. The RAMP deployment will continue until mid January 2011. The data will be made available to the scientific community within the time frame required for IRIS/PASSCAL "RAMP" deployments.The project will support a postdoctoral student to participate in the deployment, and foster a collaboration with scientific teams in New Zealand. This work is jointly supported by the Office of International Science and Engineering and the Geophysics program.

2010年9月4日，新西兰达菲尔德地震是自1931年纳皮尔地震以来袭击新西兰的最具破坏性。尽管没有生命，但该地区，尤其是在基督城附近的损失，损失量巨大，预计经济损失总额将超过20亿新西兰元。地震在科学上也很有趣，令人惊讶。它发生在假定风险较低的区域中的先前未封闭断层上（例如，高山断层）。复杂的源时间功能刺激了两个或多个子事件涉及。最令人惊讶的方面之一是沿几乎东西方的断层沿该事件的前进性滑坡特征。 South Islandtectonics主要由高山断层系统和附近（大多数东北向西北延伸打滑断层）所主导，例如希望断层。该项目的数据将为研究一个很可能年轻和不成熟的故障提供机会，因此与成熟的断层（例如San Andreas Wurd incalifornia或土耳其的Anatolian断层）的性质有所不同。新西兰和UW-Madison的科学家部署了临时的地震仪器监视器。新西兰仪器由GNS Science和Victoria University的工作人员部署，分别由Terry Webb和Martha Savage领导。皮瑟（Pi Thurberarrang）从Iris/Passcal设施Tochristchurch运往9条坡道仪器，并派遣了2名UW-Madison员工到新西兰部署它们。 18个短期，9个宽带和3种强运动仪器将通过这项联合努力部署。坡道部署将持续到2011年1月中旬。数据将在IRIS/Passcal“ RAMP”部署所需的时间范围内提供给科学界。该项目将支持博士后学生参与部署，并促进与新西兰科学团队的合作。这项工作得到了国际科学与工程与地球物理学计划的共同支持。