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Sea level rise estimation and interpretation in Malaysian region using multi-sensor techniques

Rise in sea level is one of the disastrous effects of climate change. A relatively small increase in sea level could affect the natural coastal system. This study presents an approach to estimate before interpreting the precise sea level trend based on a combination of multi-sensor techniques in the...

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Main Author:	Md. Din, Ami Hassan
Format:	Thesis
Language:	English
Published:	2014
Subjects:	G70.212-70.215 Geographic information system
Online Access:	http://eprints.utm.my/id/eprint/77825/1/AmiHassanMdPFGHT2014.pdf http://eprints.utm.my/id/eprint/77825/ http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:98589
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id	my.utm.77825
record_format	eprints
spelling	my.utm.778252018-07-04T11:48:09Z http://eprints.utm.my/id/eprint/77825/ Sea level rise estimation and interpretation in Malaysian region using multi-sensor techniques Md. Din, Ami Hassan G70.212-70.215 Geographic information system Rise in sea level is one of the disastrous effects of climate change. A relatively small increase in sea level could affect the natural coastal system. This study presents an approach to estimate before interpreting the precise sea level trend based on a combination of multi-sensor techniques in the Malaysian region over a period of 19 years. In the study, six altimeter missions were used to derive the absolute sea levels which were processed in the Radar Altimeter Database System. Next, 21 tide gauge stations along the coastlines of Malaysia were utilised to derive the rate of relative sea levels that took into account sea level changes and vertical land motions. To obtain absolute sea level at tide gauge, vertical land motions at these stations were removed by employing three techniques, namely GPS, Persistent Scatterers Interferometric Synthetic Aperture Radar and altimeter minus tide gauge. Bernese software with double difference strategy was employed to process data from 87 local and 30 international GPS stations. Using Persistent Scatterers Interferometric Synthetic Aperture Radar, the Stanford Method for Persistent Scatterer software processed 111 images. Besides that, the satellite altimeter and tide gauges were used to retrieve the differential rates estimated by altimetry and tidal data to obtain the rate of vertical land motion. Following that, absolute sea level rates from the tide gauge stations and multi-satellite altimeter missions were combined. This combination produced the regional sea level trend of the Malaysian seas. The findings from the multi-sensor techniques showed that the regional sea level trend has been rising at a rate of 2.65 ± 0.86 mm/yr to 6.03 ± 0.79 mm/yr for the chosen sub-areas, with an overall mean of 4.47 ± 0.71 mm/yr. Upon completion of the study, a Sea Level Information System for the Malaysian seas was developed to facilitate users in analysing, manipulating and interpreting sea level and vertical land motion data. This system is expected to be valuable for a wide variety of climatic applications to study environmental issues related to flood and global warming in Malaysia. 2014-09 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/77825/1/AmiHassanMdPFGHT2014.pdf Md. Din, Ami Hassan (2014) Sea level rise estimation and interpretation in Malaysian region using multi-sensor techniques. PhD thesis, Universiti Teknologi Malaysia, Faculty of Geoinformation and Real Estate. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:98589
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
language	English
topic	G70.212-70.215 Geographic information system
spellingShingle	G70.212-70.215 Geographic information system Md. Din, Ami Hassan Sea level rise estimation and interpretation in Malaysian region using multi-sensor techniques
description	Rise in sea level is one of the disastrous effects of climate change. A relatively small increase in sea level could affect the natural coastal system. This study presents an approach to estimate before interpreting the precise sea level trend based on a combination of multi-sensor techniques in the Malaysian region over a period of 19 years. In the study, six altimeter missions were used to derive the absolute sea levels which were processed in the Radar Altimeter Database System. Next, 21 tide gauge stations along the coastlines of Malaysia were utilised to derive the rate of relative sea levels that took into account sea level changes and vertical land motions. To obtain absolute sea level at tide gauge, vertical land motions at these stations were removed by employing three techniques, namely GPS, Persistent Scatterers Interferometric Synthetic Aperture Radar and altimeter minus tide gauge. Bernese software with double difference strategy was employed to process data from 87 local and 30 international GPS stations. Using Persistent Scatterers Interferometric Synthetic Aperture Radar, the Stanford Method for Persistent Scatterer software processed 111 images. Besides that, the satellite altimeter and tide gauges were used to retrieve the differential rates estimated by altimetry and tidal data to obtain the rate of vertical land motion. Following that, absolute sea level rates from the tide gauge stations and multi-satellite altimeter missions were combined. This combination produced the regional sea level trend of the Malaysian seas. The findings from the multi-sensor techniques showed that the regional sea level trend has been rising at a rate of 2.65 ± 0.86 mm/yr to 6.03 ± 0.79 mm/yr for the chosen sub-areas, with an overall mean of 4.47 ± 0.71 mm/yr. Upon completion of the study, a Sea Level Information System for the Malaysian seas was developed to facilitate users in analysing, manipulating and interpreting sea level and vertical land motion data. This system is expected to be valuable for a wide variety of climatic applications to study environmental issues related to flood and global warming in Malaysia.
format	Thesis
author	Md. Din, Ami Hassan
author_facet	Md. Din, Ami Hassan
author_sort	Md. Din, Ami Hassan
title	Sea level rise estimation and interpretation in Malaysian region using multi-sensor techniques
title_short	Sea level rise estimation and interpretation in Malaysian region using multi-sensor techniques
title_full	Sea level rise estimation and interpretation in Malaysian region using multi-sensor techniques
title_fullStr	Sea level rise estimation and interpretation in Malaysian region using multi-sensor techniques
title_full_unstemmed	Sea level rise estimation and interpretation in Malaysian region using multi-sensor techniques
title_sort	sea level rise estimation and interpretation in malaysian region using multi-sensor techniques
publishDate	2014
url	http://eprints.utm.my/id/eprint/77825/1/AmiHassanMdPFGHT2014.pdf http://eprints.utm.my/id/eprint/77825/ http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:98589
_version_	1643657645391872000
score	13.211869

Sea level rise estimation and interpretation in Malaysian region using multi-sensor techniques

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