Coseismic ground deformation map for the 2020 M>7.5 Shumagin, Alaska, earthquake doublet

This repository contains six interferograms from ESA Sentinel-1 satellite acquired over the 2020 M>7.5 Shumagin, Alaska, earthquake doublet. These interferograms were obtained by processing Sentinel-1 SAR data with the JPL-developed InSAR Scientific Computing Environment (ISCE) open-source software package. The details of six Sentinel-1 interferograms for the 2020 Shumagin earthquake doublet, M7.8 and M7.6 events, are listed in the table below.

Earthquake date and magnitude

Track

no.

Direction

(asc/des)

Incidence

(degree)

Primary image

(yyyy/mm/dd hh:mm:ss)

Secondary image

(yyyy/mm/dd hh:mm:ss)

2020/07/22  06:12:44  M7.8
73
des
30-33
2020/07/10 17:03:59
2020/07/22 17:04:00

102
des
43-46
2020/07/12 16:47:32
2020/07/24 16:47:33

153
asc
36-41
2020/07/22 04:23:36
2020/09/08 04:23:39

2020/10/19  20:54:38  M7.6
73
des
30-35
2020/10/14 17:04:04
2020/10/26 17:04:04

102
des
43-46
2020/10/16 16:47:36
2020/10/28 16:47:36

153
asc
34-41
2020/10/14 04:23:40
2020/11/07 04:23:40

These interferograms were generated for figures in: Jiang, Y., González, P. J., and Bürgmann, R. "Subduction earthquakes controlled by incoming plate geometry: The 2020 M>7.5 Shumagin, Alaska, earthquake doublet. " Earth and Planetary Science Letters.

本仓库包含6幅由欧洲空间局（ESA）Sentinel-1卫星获取的干涉图，覆盖2020年阿拉斯加舒马金（Shumagin）群岛M>7.5级双震事件。上述干涉图通过使用美国喷气推进实验室（JPL）开发的开源InSAR科学计算环境（ISCE）软件，处理Sentinel-1合成孔径雷达（SAR）数据生成。针对2020年舒马金群岛双震事件（分别为M7.8级与M7.6级地震）的6幅Sentinel-1干涉图详情如下表所列。

| 地震日期与震级 | 轨道号 | 飞行方向（升轨/降轨） | 入射角（°） | 主影像（yyyy/mm/dd hh:mm:ss） | 辅影像（yyyy/mm/dd hh:mm:ss） |
| --- | --- | --- | --- | --- | --- |
| 2020/07/22 06:12:44 M7.8 | 73 | 降轨 | 30~33 | 2020/07/10 17:03:59 | 2020/07/22 17:04:00 |
| | 102 | 降轨 | 43~46 | 2020/07/12 16:47:32 | 2020/07/24 16:47:33 |
| | 153 | 升轨 | 36~41 | 2020/07/22 04:23:36 | 2020/09/08 04:23:39 |
| 2020/10/19 20:54:38 M7.6 | 73 | 降轨 | 30~35 | 2020/10/14 17:04:04 | 2020/10/26 17:04:04 |
| | 102 | 降轨 | 43~46 | 2020/10/16 16:47:36 | 2020/10/28 16:47:36 |
| | 153 | 升轨 | 34~41 | 2020/10/14 04:23:40 | 2020/11/07 04:23:40 |

本批干涉图用于以下论文的配图：Jiang, Y.、González, P. J.与Bürgmann, R. 所著《受入射板块几何形态控制的俯冲地震：2020年阿拉斯加舒马金群岛M>7.5级双震事件》，刊载于《Earth and Planetary Science Letters》。