Spatial and temporal variations of the seasonal sea level cycle in the northwest <scp>P</scp>acific

Feng, Xiangbo; Tsimplis, Michael; Marcos, Marta; Calafat, Francesc; Zheng, Jinhai; Jordà, Gabriel; Cipollini, Paolo

doi:10.1002/2015jc011154

Cited by 31 publications

(36 citation statements)

References 52 publications

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“…Interannual to multidecadal variability has been related to changes in atmospheric pressure and wind fields (e.g., Plag and Tsimplis 1999, in the North and Baltic Seas; Marcos and Tsimplis 2007, in Southern Europe; Torres and Tsimplis 2012, in the Caribbean Sea) which, in turn, are linked to climate indices such as NAO. They have also been associated with variability in ocean currents, especially where these are strong (e.g., in the NW Pacific (Feng et al 2015) or western Atlantic (Calafat et al 2018)), or to changes in large-scale forcing patterns in steric height or sea surface temperature (SST) (Wahl et al 2014). The study of Amiruddin et al (2015) made use of both tide gauge and altimeter data from the South China Sea, finding significant differences between the coastal seasonal cycle and that of the nearby deeper ocean.…”

Section: Seasonal Variability In Coastal Sea Levelmentioning

confidence: 99%

Forcing Factors Affecting Sea Level Changes at the Coast

et al. 2019

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We review the characteristics of sea level variability at the coast focussing on how it differs from the variability in the nearby deep ocean. Sea level variability occurs on all timescales, with processes at higher frequencies tending to have a larger magnitude at the coast due to resonance and other dynamics. In the case of some processes, such as the tides, the presence of the coast and the shallow waters of the shelves results in the processes being considerably more complex than offshore. However, 'coastal variability' should not always be considered as 'short spatial scale variability' but can be the result of signals transmitted along the coast from 1000s km away. Fortunately, thanks to tide gauges being necessarily located at the coast, many aspects of coastal sea level variability can be claimed to be better understood than those in the deep ocean. Nevertheless, certain aspects of coastal variability remain under-researched, including how changes in some processes (e.g., wave setup, river runoff) may have contributed to the historical mean sea level records obtained from tide gauges which are now used routinely in large-scale climate research.

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Section: Seasonal Variability In Coastal Sea Levelmentioning

confidence: 99%

Forcing Factors Affecting Sea Level Changes at the Coast

et al. 2019

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“…They suggested that sea surface temperature and sea level pressure are the reason for the amplitude increase. Feng et al [10] indicated that wind forcing and steric component are dominant impacts on the marginal seas and deep ocean (or open ocean) of the northwest Pacific Ocean, respectively. Amiruddin et al [11] also reported similar results in the South China Sea.…”

Section: Introductionmentioning

confidence: 99%

“…Amiruddin et al [11] also reported similar results in the South China Sea. The temporal variation of seasonal sea level cycle has been investigated at regional scales, such as by Wahl et al [2] for the United States Gulf coast, Feng et al [10] and Amiruddin et al [11] for the northwest Pacific coast, Torres and Tsimplis [12] for the Caribbean Sea, and Passaro et al [13] and Cheng et al [14] for the Baltic Sea and North Sea, respectively. Only a few studies have been conducted on seasonal sea level cycle in the Northeast Pacific Ocean.…”

Section: Introductionmentioning

confidence: 99%

Annual Sea Level Amplitude Analysis over the North Pacific Ocean Coast by Ensemble Empirical Mode Decomposition Method

Lan

Kuo

et al. 2021

Remote Sensing

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Understanding spatial and temporal changes of seasonal sea level cycles is important because of direct influence on coastal systems. The annual sea level cycle is substantially larger than semi-annual cycle in most parts of the ocean. Ensemble empirical mode decomposition (EEMD) method has been widely used to study tidal component, long-term sea level rise, and decadal sea level variation. In this work, EEMD is used to analyze the observed monthly sea level anomalies and detect annual cycle characteristics. Considering that the variations of the annual sea level variation in the Northeast Pacific Ocean are poorly studied, the trend and characteristics of annual sea level amplitudes and related mechanisms in the North Pacific Ocean are investigated using long-term tide gauge records covering 1950–2016. The average annual amplitude of coastal sea level exhibits interannual-to-decadal variability within the range of 14–220 mm. The largest value of ~174 mm is observed in the west coast of South China Sea. In the other coastal regions of North Pacific Ocean, the mean annual amplitude is relatively low between 77 and 124 mm for the western coast and 84 and 87 mm for the eastern coast. The estimated trend values for annual sea level amplitudes in the western coastal areas of South China Sea and Northeast Pacific Ocean have statistically decreased over 1952–2014 with a range of −0.77 mm·yr−1 to −0.11 mm·yr−1. Our results suggested that the decreasing annual amplitude in the west coast of South China Sea is in good agreement with the annual mean wind stress associated with the Pacific Decadal Oscillation (PDO). This wind phenomenon also explains the temporal variations of annual sea level amplitude in Northeast Pacific Ocean, especially the high correlations since 1980 (R = 0.61−0.72).

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“…Despite this great interest, very few studies have been conducted to investigate the local sea level trend around this deltaic region. Most studies rather focus on a wider scale (e.g., Amiruddin et al, 2015;Feng et al, 2015;Dangendorf et al, 2014;Wei et al, 2010) or on nearby regions (e.g., Luu et al, 2015;Suriyan and Tal, 2014;Sojisuporn et al, 2013). In this study, the inter-decadal and seasonal trends as well as the spatial distribution of the sea level along the Mekong Delta coast were investigated.…”

Section: Introductionmentioning

confidence: 99%

Spatio-temporal variations of sea level around the Mekong Delta: their causes and consequences on the coastal environment

Hak

Nadaoka

Bernado

et al. 2016

Hydrological Research Letters

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This paper presents a comprehensive analysis of sea level variations around the Mekong Delta, and their causes and consequences on the environment, based on the tidal records from several stations. The results of the analysis revealed significant spatio-temporal sea level variations along the delta coast. Tidal fluctuations showed their local peaks around the river mouth with shallow bottom areas. The prevailing winds were identified as the factor governing the remarkable seasonal variability of the mean sea levels along the southern coast of the delta. From 1985 to 2010, the relative sea level along the southern coast of the delta rose by about 3.3 mm y -1 . This rate of rise combined with the effect of land subsidence renders the Mekong Delta alarmingly susceptible to frequent inundation. Moreover, the immediate impacts, including saline intrusion and occasional inundation due to seasonal sea level fluctuation, are also found to be critical and require urgent attention. These findings suggest the need to revise coastal management strategies to prioritize the immediate effects of short-term sea level fluctuations and to increase the focus on local management issues such as groundwater pumping causing land subsidence and local sea level trends in addition to the global threats.

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Spatial and temporal variations of the seasonal sea level cycle in the northwest Pacific

Cited by 31 publications

References 52 publications

Forcing Factors Affecting Sea Level Changes at the Coast

Forcing Factors Affecting Sea Level Changes at the Coast

Annual Sea Level Amplitude Analysis over the North Pacific Ocean Coast by Ensemble Empirical Mode Decomposition Method

Spatio-temporal variations of sea level around the Mekong Delta: their causes and consequences on the coastal environment

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