CHANGE ANALYSIS OF INICES (NWI, NVI,NI) FOR MAWLAMYINE CITY AREA SING GOOGLE EARTH ENGINE
Abstract
- Until last year, most of the scholars in Geography face many problems to get fine resolution satellite images, to have small knowledge for geo-spatial techniques and difficult the use of GIS analysis as professional. To overcome the above said limitations, Google Earth Engine (GEE) can be able to get a lot of satellite images easily, easy access to data, online platform with scientific algorithms, computational power and etc. This research is analyzedusing GEE platform for temporal and spatial change of urban area which is based on satellite imagery from Landsat 5and Landsat 8 Top of Atmosphere (TOA) as inputs for Mawlamyine City, Mon State. The analysis of indices: normalized difference vegetation index (NDVI), normalized difference water index (NDWI) and normalized difference built-up index (NDBI) produce fine-quality of vegetation, water and built-up values. Although the dataset can facilitate these three indices in any platform, this paper highlight its potential use in GEE for temporal scale analysis of the urbanization process. The main aim is to evaluate the extracted values from three indices that can be applied to GEE platform for urban area analysis. The results show that the reflected values of vegetation, water and built-up in Mawlamyine City during the three time periods (1997, 2007 and 2017). This process requires reliable and comprehensive checked with field survey data for build up to validate of these products. Actually the result of built-up area comprises with the mixture of built up and bare land. It can also be reclassified with the positive and negative Digital Numbers (DNs) for built-up and bare areas. Thermal Infrared Sensor(TIRS) can only classify as an indicator to separate built-up from non-built-up areas (bare land) but this paper cannot calculated this processes to preparing for further study.
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Year
- 2018
Author
-
Myo Myo Khine
Subject
- Geog Geol
Publisher
- Myanmar Academy of Arts and Science (MAAS)