Mass-induced sea level variations in the Red Sea from GRACE,steric-corrected altimetry,in situ bottom pressure records,and hydrographic observations |
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| Institution: | 1. Department of Geography and Resource Management, The Chinese University of Hong Kong, 999077, Hong Kong;2. Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, 999077, Hong Kong;3. Institute of Space and Earth Information Science, The Chinese University of Hong Kong, 999077, Hong Kong;4. Department of Geography, University of Cambridge, CB2 3EN Cambridge, UK;1. State Key Laboratory of Geodesy and Earth''s Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan, China;2. Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan;3. Center for Space Research, University of Texas at Austin, Austin, USA;4. Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, USA |
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| Abstract: | An annual amplitude of ～18 cm mass-induced sea level variations (SLV) in the Red Sea is detected from the Gravity Recovery and Climate Experiment (GRACE) satellites and steric-corrected altimetry from 2003 to 2011. The annual mass variations in the region dominate the mean SLV, and generally reach maximum in late January/early February. The annual steric component of the mean SLV is relatively small (<3 cm) and out of phase of the mass-induced SLV. In situ bottom pressure records at the eastern coast of the Red Sea validate the high mass variability observed by steric-corrected altimetry and GRACE. In addition, the horizontal water mass flux of the Red Sea estimated from GRACE and steric-corrected altimetry is validated by hydrographic observations. |
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| Keywords: | Sea level variations Mass variations GRACE Red Sea |
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