WAVEFORM IDENTIFICATION OF ALTIMETRY SATELLITE DATA OF SHALLOW AND DEEP WATERS IN SOUTHERN JAVA WATERS
<p><strong><em>ABSTRACT</em></strong></p> <p><em>Waveform patterns of satellite altimetry affect the accuracy of sea surface height estimation from the satellite. The waveform</em><em> patterns found in the coastal waters are generally not in the ideal form (Brown-waveform), resulting inaccurate in sea surface height estimation. The objec-tives of this research were to identify patterns of the waveform and determine their variability. Satellite altimetry Jason-2 SGDR</em> (<em>Sensor Geophysical Data Record</em>) <em>type D data located in the southern Java island waters of the year of 2013 were used and downloaded from “NOAA's Comprehensive Large Array-data Stewardship System</em>”<em> (www.class.ncdc.noaa.gov)<em> </em><a href="http://www.class.ncdc.noaa.gov"><em></em></a><em></em></em><em>.</em> <em>Waveform identification and analyses were conducted along the satel</em><em>l</em><em>it</em><em>e</em><em> pass within the distance of 0-10 km, 10-50 km, and 50-100 km form the coastline. Results showed that the highest number of non-Brown-waveform was found within 0-10 km of the coastline (69%). Meanwhile, within the distance of 10-50 km and 50-100 km from the coastline, the number of non-Brown waveform was 5% and 3%, respectively. Brown waveform patterns could be found generally starting at 7.58 km from the coastline</em>. <em>Factors such as</em><em> land near coastal waters, the depth and shape of the surface waters, aerosols in the atmosphere, building (example: lighthouse or ship) found in coastal areas suspected to be the cause of the noise in waveforms.</em></p> <p><strong><em> </em></strong></p> <strong><em>Keywords: </em></strong><em>Borwn and non-Brown waveform, sea level height, altimetry satellite, identification</em>