Chapters authored
Pre-earthquake Anomaly Detection and Assessment through Lineament Changes Observation Using Multi-temporal Landsat 8-OLI Imageries: Case of Gorkha and Imphal
Pre-earthquake anomaly detection and assessment was performed in the present study through lineament changes observation by using multitemporal Landsat 8 OLI satellite imageries. These data found convincing results to identify relevant anomalous variations prior to the two recent earthquakes, that is, Gorkha of Nepal 7.8 Mw (major) (25 April 2015) and Imphal of Manipur (eastern India) 6.7 Mw (strong) (4 January 2016) compared with normal behavior in the absence of earthquake. Epicenter-based single tile of five multitemporal Landsat 8 OLI data was considered for each case, where one image was considered to show the normal behavior of lineament (in the absence of earthquake) and three for anomalous behavior prior to earthquake (in the presence of earthquake), and the rest one used to represent post-earthquake behavior (in the absence of earthquake), respectively. The derived lineament data were used further in different forms to observe pre-earthquake anomalies. The research results witnessed major changes of lineaments and observed anomalies prior to the two impending earthquakes while it was observed normal behavior in the absence of earthquake event. The results obtained using the automated and geo-integrated techniques help us to detect earthquake in advance prior to its strike could be used an alternative method in worldwide for future earthquake monitoring.
Part of the book: Multi-purposeful Application of Geospatial Data