Quick Identification of Regional Earthquake-Induced Landslides Based on Sharp NDVI Change | |
Lin JY(林家元)![]() | |
2013 | |
会议名称 | nternational Symposium on Earthquake-induced Landslides, 2012 |
会议日期 | 2012-11-7 |
会议地点 | Kiryu, Japan |
关键词 | Landslide NDVI Earthquake |
通讯作者 | 林家元 |
英文摘要 | Landslides triggered by earthquake lead to substantial loss of life and damages to property. It was necessary and important to locate and plot out the landslides immediately after earthquake for quick victims rescuing. In addition, it is significant to map potential landslides for planning settlement and mitigating geological disaster. Landslide often results in sharp land cover changes in forested or bushed area, which can be easily detected by airborne or satellite-based remote sensing techniques. The region that landslide takes place is often inaccessible for field observation because of the accompanied temporary failure in transportation and communication. Therefore, remote sensing can be adopted to collect spatial information of landslide efficiently and quickly. By taking Wenchuan Earthquake as an example, this paper advanced one quick methodology to extract primary regional landslides with 8-day MODIS NDVI and terrain slope information. The threshold of temporal NDVI jump (value of 0.4) was introduced to discriminate landslide induced sharp NDVI decline from seasonal variations of vegetation cover, while slope information can be used to further confirm land cover change caused by landslide. In addition, the result emphasizes that region with slope over 15º is exposed to high landslide risk, which should be carefully taken into account in settlement and transportation planning. |
收录类别 | CPCI(ISTP) |
合作状况 | 国际 |
会议主办者 | JAPAN LANDSLIDE SOCIETY |
会议录 | Earthquake-Induced Landslides
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学科主题 | 摄影测量与遥感技术 ; 灾害学 |
语种 | 英语 |
内容类型 | 会议论文 |
源URL | [http://192.168.143.20:8080/handle/131551/4760] ![]() |
专题 | 成都山地灾害与环境研究所_数字山地与遥感应用中心 |
推荐引用方式 GB/T 7714 | Lin JY. Quick Identification of Regional Earthquake-Induced Landslides Based on Sharp NDVI Change[C]. 见:nternational Symposium on Earthquake-induced Landslides, 2012. Kiryu, Japan. 2012-11-7. |
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