Seismicity and Neotectonics of Northeast Russia

项目负责人：Fujita， kuzu俄罗斯东北部是一个由北美和欧亚板块边界及其之间一系列小块体相互作用产生新构造变形的地震活跃地区。板块和地块的相互作用导致了高水平的地震活动、隆升、断裂和局部裂陷。首席研究员将详细检查的具体区域是切尔斯基山脉和科里亚克高地。这些地区包括沿北美和欧亚板块边界的自转极，流入北冰洋的大河，以及北美板块内地震最活跃的地区之一。首席研究员将使用一个独特的、以前无法访问的数据集，该数据集是在过去五年中通过密歇根州立大学-阿拉斯加大学-费尔班克斯与俄罗斯东部研究所的合作项目收集的。这些数据集包括1980-1995年雅库特和马格达姆区域台网的地震相位数据、1970-1990年俄罗斯大陆东部较大地震的相位数据公报、1:20万比例尺的完整前军事地形图、1:50万和1:15万比例尺的地质图、卫星图像以及断层和地震诱发特征信息。这项拟议研究的结果将有助于更好地理解趋同板块边界的大陆内变形，改进危害评估，记录流入北冰洋的沉积物的来源和性质，并确定更小的区域进行实地研究。

Proposal Number: OPP-9806130Principal Investigator: Fujita, KuzuyaNortheastern Russia is a seismically active region with neotectonic deformation from the interaction of the North American and Eurasian plate boundaries and a series of small blocks between them. The plate and block interactions result in high levels of seismicity, uplift, faulting, and local rifting. The specific area that the Principal Investigator will examine in detail is in the Chersky Range and Koryak Highlands. These areas include the pole of rotation that lies along the North American and Eurasian plate boundaries, large rivers that flow into the Arctic Ocean, and one of the most seismically active regions within the North American plate. The Principal Investigator will use a unique, previously inaccessible data set that was collected during the past five years through the Michigan State University -University of Alaska-Fairbanks cooperative program with institutes in eastern Russia. These data sets consist of seismic phase data from the Yakutian and Magadam regional networks for the period 1980-1995, bulletins with phase data for larger earthquakes in continental eastern Russia for 1970-1990, complete ex-military topographic map coverage at a scale of 1:200,000, geologic maps at scales of 1:500,000 and 1:1,500,000, satellite images, and information on faulting and earthquake-induced features. Results from this proposed study should provide a better understanding of intra-continental deformation in convergent plate boundaries, improved hazard assessment, documentation of the sources and nature of sediments flowing into the Arctic Ocean, and identification of smaller regions for field study.