Seismicity and Neotectonics of Northeast Russia

提案编号：俄罗斯东北部是一个地震活跃区，其新构造变形来自北美和欧亚板块边界的相互作用以及它们之间的一系列小块体。 板块和块体的相互作用导致了高水平的地震活动、隆起、断层和局部裂谷。 首席研究员将详细研究的具体地区是切尔斯基山脉和科里亚克高地。 这些地区包括沿着北美和欧亚板块边界的旋转极，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。 主要研究者将使用一个独特的、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分校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年期间雅库特和马格达姆区域网络的地震震相数据、1970-1990年俄罗斯大陆东部较大地震震相数据公报、比例尺为1：200，000的完整的前军用地形图、比例尺为1：500，000和1：1，500，000的地质图、卫星图像以及关于断层和地震诱发特征的资料。 这项拟议研究的结果应能更好地了解会聚板块边界的大陆内部变形，改进危险评估，记录流入北冰洋的沉积物的来源和性质，并确定进行实地研究的较小区域。

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.