日本地球惑星科学連合2019年大会

講演情報

[J] ポスター発表

セッション記号 S (固体地球科学) » S-GD 測地学

[S-GD03] 測地学一般・GGOS

2019年5月27日(月) 17:15 〜 18:30 ポスター会場 (幕張メッセ国際展示場 8ホール)

コンビーナ:松尾 功二(国土地理院)、横田 裕輔(東京大学生産技術研究所)、若杉 貴浩(国土交通省国土地理院)

[SGD03-P06] Integrating PSInSAR and Hydrogeophysical Methods for the Characterization of a Earth fissure in the eastern Beijing plain

*Menglin Zhao1juan wang1wang xu1bing hu1yisheng chen1 (1.Capitai Normal University)

キーワード:PSInSAR, earth fissure, Hydrogeophysical, fault scarps

Modern Earth fissure, ranging from renewed displacement on 1-km-long fault scarps to 9.8-km-long tension cracks, occur in the eastern part of Beijing plain. Most of the failures closely parallel the pre-existing Medio-Pleistocene fault zone. The pattern of earth fissure and the relation to the inferred fault remain controversial. An integrated project, including PSInSAR, geophysical and trenching methods, has been conducted to characterize the formation of earth fissure. The results indicate that this earth fissure was caused by groundwater-level decline rather than natural tectonism. In addition, it is the first time to accurate the initiation and terminal Location of pumping-induced earth fissures within the fault zone.