Google Maps and Google Earth are very common platforms today to explore maps and satellite images of the earth. But there are many other ways to explore the earth. Some are listed here. 1. Earth Explorer This map is developed by USGS helpful to obtain earth imagery across available geo-spatial data types. Users can navigate via interactive map or text search to obtain Landsat satellite imagery, Radar data, UAS data, digital line graphs, digital elevation model data, aerial photos, Sentinel satellite data, some commercial satellite imagery including IKONOS and OrbView3, land cover data, digital map data from the National Map, and many other datasets. Users can search by exact location via the interactive map or input specific coordinates to view what data types are available. 2. Sentinel Hub This platform developed by Sinergise has Sentinel, Landsat, and other Earth observation imagery easily accessible for browsing, visualization and analysi...
Background Nepal lies in the central Asia between China to the north and India to the south. Southern Nepal occupies some 20 to 40 km wide Terai plain (Indo-Gangetic plain) about a few hundred meters above sea level. The Terai and the Siwalik areas are in the foreland of the Nepal Himalaya and are known for sedimentary basins with considerable thickness. Several sedimentary formations of the basins could have generated petroleum and could be located in suitable structural traps. Terai and Siwaliks are thus target areas for hydrocarbon exploration. This part of the country is covered by road network, electricity lines, etc., and is the most accessible region in Nepal. It is notable that oil and gas seeps have been observed to the north of Main Boundary Thrust (MBT) in different parts of the country from time immemorial. These seepages, as in Dailekh, western Nepal, were subjected to only preliminary analysis in the sixties, but extensive geochemical studies were done in 1993. One of the...