Recognition And Analysis Of GeomorphologyRemote Sensing Based On Aster Satellite Images

Geomorphology is the study of landforms and landform evolution. The topic traditionally has beenstudied both qualitatively, which is the description of landforms, and quantitatively, which is processbasedand describes forces acting on Earth's surface to produce landforms and landform change. Remotesensing is the observation of surfaces or objects while not being in direct contact with them. By thisdefinition, cameras are remote sensors, observing the environment around us but not requiring us totouch the objects photographed; our eyes also fall into this category. The more commonly acceptedexample of remote sensing is the use of satellites in orbit around the earth to observe the surface formonitoring purposes. Since the development of Google Earth, access to such data has become availableto everyone for free. However, remote sensing for environmental monitoring is more involved thansimply looking at one's neighbourhood from above: it has the capability to provide wide-scaleobservations of all geomorphological features on Earth's surface. We are able to monitor the changingshape of Earth's surface, assess the processes occurring, and identify landforms in remote regions thatmight otherwise be inaccessible. In its most simple application, we can take a remotely sensed image ofEarth's surface and interpret what we see to produce a geomorphological map. This allows us to mapregions rapidly that might otherwise take many weeks of manual exploration and cartography. Suchmapping processes can even be automated, to a certain extent. One constraint that we have, however,relates to the spatial resolution of particular sensors, such as the smallest area on Earth's surface that asensor can distinguish. For continental-scale features such as mountain ranges, sensors with a coarserresolution may be sufficient. Advanced Spaceborne Thermal Emission and Reflection Radiometer(ASTER) is a Japanese remote sensing instrument onboard the Terra satellite launched by NASA in۱۹۹۹. It has been collecting data since February ۲۰۰۰. ASTER provides high-resolution images of Earthin ۱۴ different bands of the electromagnetic spectrum, ranging from visible to thermal infrared light.The resolution of images ranges between ۱۵ and ۹۰ meters. In this article, we are going to recognize andanalyze geomorphology remote sensing based on Aster satellite images.

Keywords:

Georeferencing , Semi-Arid Ecosystems , Aster Imagery , Remote Sensing