OJMS  Vol.2 No.2 , April 2012
Spatial and Temporal Features of Regional Variations in Mean Sea Level around Taiwan
ABSTRACT
Satellite altimeter and in-situ tide gauge records are probably the most common means to obtain observational data for the study of changes in mean sea level. In this study, we employed these data to discuss the spatial and temporal features of regional variations in mean sea level around Taiwan. The results showed that most of the regional mean sea surface heights (SSH) around Taiwan are higher than the global mean sea surface heights. Most of the sea level trends are greater than the global mean sea level trend as well. We obtained diverse distribution results from the altimeter sea level records in neighboring areas by distributions fit, and the altimeter sea level records showed obvious inhomogene- ity. In addition, periodic fluctuations in the records regarding mean sea level were revealed in our study, based on Fourier spectra and wavelet scalograms.

Cite this paper
L. Wu, C. Kao, T. Hsu, Y. Wang and J. Wang, "Spatial and Temporal Features of Regional Variations in Mean Sea Level around Taiwan," Open Journal of Marine Science, Vol. 2 No. 2, 2012, pp. 58-65. doi: 10.4236/ojms.2012.22008.
References
[1]   D. Reeve, A. Chadwick and C. Fleming, “Coastal Engineering: Processes, Theory, and Design Practice,” Spon Press, New York, 2004.

[2]   S. Dasgupta, B. Laplante, C. Meisner, D. Wheeler and J. Yan, “The Impact of Sea Level Rise on Devel-oping Countries: A Comparative Analysis,” Climatic Change, Vol. 93, No. 3-4, 2009, pp. 379-388. doi:10.1007/s10584-008-9499-5

[3]   J. A. Church and N. J. White, “A 20th Century Acceleration in Global Sea-level Rise,” Geophysical Research Letters, Vol. 33, 2006, pp. 1-4.

[4]   Y. H. Tseng, L. C. Breaker and E. T. Y. Chang, “Sea Level Varia-tions in the Regional Seas around Taiwan,” Journal of Ocean-ography, Vol. 66, No. 1, 2010, pp. 27-39. doi:10.1007/s10872-010-0003-2

[5]   A. Cazenave, K. Dominh, F. Ponchaut, L. Soudarin, J. F. Cretaux and C. Le Provost, “Sea Level Changes from Topex-Poseidon Altimetry and Tides Gauges, and Vertical Crustal Motions from DORIS,” Geo-physical Research Letters, Vol. 26, No. 14, 1999, pp. 2077-2080. doi:10.1029/1999GL900472

[6]   J. L. Chen, C. R. Wilson, B. D. Tapley and T. Pekker, “Contributions of Hydrological Proc-esses to Sea Level Change,” Physics and Chemistry of the Earth, Vol. 27, No. 32-34, 2002, pp. 1439-1443. doi:10.1016/S1474-7065(02)00088-8

[7]   N. J. White, J. A. Church and J. M. Gregory, “Coastal and Global Averaged Sea Level Rise for 1950 to 2000,” Geophysical Research Letters, Vol. 32, 2005, pp. 1-4.

[8]   http://www.aviso.oceanobs.com/duacs/

[9]   R. M. Ponte, “Low-frequency Sea Level Variability and the Inverted Ba-rometer Effect,” Journal of Atomspheric and Oceanic Tech-nology, Vol. 23, No. 4, 2006, pp. 619- 629. doi:10.1175/JTECH1864.1

[10]   C. Wunsch and D. Stammer, “Atmospheric Loading and the Oceanic Inverted Barometer Effect,” Reviews of Geo- physics, Vol. 35, No. 1, 1997, pp. 79-107. doi:10.1029/96RG03037

[11]   M. Ablain, A. Lombard, N. Picot and A. Cazenave, “Error Estimation of the Global and Local Mean Sea Level Trends from Jason-1&2 and T/P Data,” Communication at Ocean Sciences Symposium, Portland, 22-26 February 2010.

[12]   Subsidence of Various Regions around Taiwan. http://www.wra.gov.tw/public/Data/sovr.htm

[13]   S. B. Yu and L. C. Kuo, “Present-Day Crustal Motion along the Longi-tudinal Valley Fault, Eastern Taiwan,” Tectonophysics, Vol. 333, No. 1-2, 2001, pp. 199-217. doi:10.1016/S0040-1951(00)00275-4

[14]   B. C. Lee, L. C. Wu, D. J. Doong and C. C. Kao, “Seasonal Variations of Wind and Wave Data over Taiwan Waters,” Marine Geophysical Re-searches, Vol. 28, No. 3, 2007, pp. 183-190. doi:10.1007/s11001-007-9025-6

[15]   Z. H. C. Laurence, L. C. Wu, D. J. Doong and C. C. Kao, “Two-dimensional Continuous Wavelet Transform of Simulated Spatial Images of Waves on a Slowly Varying Topography,” Ocean Engineering, Vol. 35, No. 10, 2007, pp. 1039-1051.

[16]   R. J. Marks, “Handbook of Fourier Analysis & Its Applications,” Oxford University Press Inc., Oxford, 2009.

[17]   P. C. Liu, “Is the Wind Wave Fre-quency Spectrum Outdated,” Ocean Engineering, Vol. 27, No. 5, 2000, pp. 577- 588. doi:10.1016/S0029-8018(98)00074-2

 
 
Top