COLLABORATIVE RESEARCH: Tectonics of the Eurasia--North America Plate Boundary in East Asia

9814528金，东亚包括欧亚板块和北美板块边界的广泛形变区是主要板块边界中最不为人所知的。最近在东西伯利亚、韩国和日本获得的高精度大地测量(GPS)以及地震学和地质数据为理解这一神秘地区提供了重大进展的机会。为实现这一目标，国际和平研究所将对1999年15-20个关键地点的重复全球定位系统测量进行综合分析，并对该区域的高分辨率地形数据进行形态分析。他们预计，他们的大地测量分析将首次以每年几毫米的水平限制从中亚到北美西部的形变运动学。这些地区的形变模式将有助于阐明东亚的构造及其与太平洋板块俯冲和印度-欧亚碰撞的关系。

9814528 King The broad zone of deformation in eastern Asia encompassing the boundary of the Eurasian and North American plates is the least understood of major plate boundaries. Recent availability of high-precision geodetic (GPS) measurements in eastern Siberia, Korea, and Japan, together with seismological and geological data provides the opportunity for a significant advance in understanding of this enigmatic region. To achieve this goal, the PI's will perform an integrated analysis of the repeated GPS measurements in 1999 of 15-20 key sites, and a morphological analysis of high-resolution topographic data for the region. They expect their geodetic analysis to constrain, for the first time at the level of a few millimeters per year, the kinematics of deformation from central Asia to western North America. The pattern of deformation across these areas will help to illuminate the tectonics of East Asia and their relationship to subduction of the Pacific plate and the India-Eurasia collision.