Remote Sensing Applications and Decision Support

Mean dynamic topography over Peninsular Malaysian seas using multimission satellite altimetry

[+] Author Affiliations
Isaac Chidi Abazu, Kamaludin Mohd Omar

Universiti Teknologi Malaysia, Geomatic Innovation Research Group (GIG), Faculty of Geoinformation and Real Estate, Johor, Malaysia

Ami Hassan Md Din

Universiti Teknologi Malaysia, Geomatic Innovation Research Group (GIG), Faculty of Geoinformation and Real Estate, Johor, Malaysia

Universiti Teknologi Malaysia, Geoscience and Digital Earth Centre (INSTEG), Faculty of Geoinformation and Real Estate, Johor, Malaysia

Universiti Malaysia Terengganu, Institute of Oceanography and Environment (INOS), Terengganu, Malaysia

J. Appl. Remote Sens. 11(2), 026017 (May 22, 2017). doi:10.1117/1.JRS.11.026017
History: Received November 14, 2016; Accepted April 27, 2017
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Abstract.  The development of satellite altimeters (SALTs) has brought huge benefits, among which is the ability to more adequately sense ocean-surface topography. The radar altimeter database system was used to capture and process ENVISAT, CRYOSAT-2, SARAL, JASON-1, and JASON-2 SALT data of 5 years between 2011 and 2015. The time series of monthly multimission SALT data showed an estimated sea level trend of 1.0, 2.4, 2.4, 3.6, and 12.0  mm/year at Gelang, Port Kelang, Kukup, Cendering, and Keling. The correlation analysis for the selected tide gauge stations produced satisfying results of R-squared with 0.86, 0.89, 0.91, and 0.97 for Cendering, Sedili, Gelang, and Geting, respectively. The ITG-Grace2010s geoid model was used to compute the mean dynamic topography (MDT) and plot to a grid of 0.25 deg for the Malacca Strait and South China Sea of Peninsular Malaysia, with Keling, Port Kelang, Geting, Sedili, and Johor Bahru tide gauge stations having values determined by interpolation to be 1.14, 1.19, 1.26, 1.88, and 2.91 m, respectively. MDT is computed from the SALT with respect to Port Kelang, the north–south sea slope ranges between 0.64 and 0.29  m/50  km and 0.01 and 0.52  m/50  km along the east and west coasts of Peninsular Malaysia, respectively.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Isaac Chidi Abazu ; Ami Hassan Md Din and Kamaludin Mohd Omar
"Mean dynamic topography over Peninsular Malaysian seas using multimission satellite altimetry", J. Appl. Remote Sens. 11(2), 026017 (May 22, 2017). ; http://dx.doi.org/10.1117/1.JRS.11.026017


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