当前位置: X-MOL 学术Earth Planets Space › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Seasonal and transient surface displacements in the Kumamoto area, Japan, associated with the 2016 Kumamoto earthquake: implications for seismic-induced groundwater level change
Earth, Planets and Space ( IF 3.0 ) Pub Date : 2020-10-09 , DOI: 10.1186/s40623-020-01275-2
Kazuya Ishitsuka , Takeshi Tsuji , Weiren Lin , Makoto Kagabu , Jun Shimada

The 2016 Kumamoto earthquake sequence on April 14 ( M w 6.2) and April 16 ( M w 7.0) altered the regional groundwater level. To better understand the relationship between groundwater level change and surface displacement, we estimated surface displacement in the Kumamoto area (Japan) using persistent scatterer interferometry from 19 ALOS/PALSAR images acquired between January 7, 2007 and March 5, 2011, 28 ALOS-2/PALSAR-2 images acquired between April 17, 2016 and December 10, 2018, and 113 Sentinel-1 images acquired between May 26, 2016 and December 30, 2018. Our estimation shows that transient surface displacement occurred following the 2016 Kumamoto earthquake sequence, together with seasonal surface displacement that was not detected from the 2007–2011 images. We suggest that a portion of the transient displacement occurred via groundwater drawdown through new ruptures that formed owing to the 2016 Kumamoto earthquake sequence and sediment compaction. Seasonal surface displacements detected after the 2016 Kumamoto earthquake sequence are linked to groundwater level variations.

中文翻译:

与 2016 年熊本地震相关的日本熊本地区的季节性和瞬态地表位移:对地震引起的地下水位变化的影响

4 月 14 日(M w 6.2)和 4 月 16 日(M w 7.0)的 2016 年熊本地震序列改变了区域地下水位。为了更好地了解地下水位变化与地表位移之间的关系,我们使用持久散射干涉测量法从 2007 年 1 月 7 日至 2011 年 3 月 5 日期间获得的 19 幅 ALOS/PALSAR 图像估算了熊本地区(日本)的地表位移,28 ALOS-2 2016 年 4 月 17 日至 2018 年 12 月 10 日期间获取的 /PALSAR-2 图像和 2016 年 5 月 26 日至 2018 年 12 月 30 日期间获取的 113 张 Sentinel-1 图像。我们的估计表明,瞬态表面位移发生在 2016 年熊本地震序列之后,以及 2007-2011 年图像中未检测到的季节性表面位移。我们认为,部分瞬时位移是由于 2016 年熊本地震序列和沉积物压实而形成的新破裂引起的地下水下降。2016 年熊本地震序列后检测到的季节性地表位移与地下水位变化有关。
更新日期:2020-10-09
down
wechat
bug