Relative Contribution of External Sources of Mean Sea-level Variations at Port Sudan, Red Sea

1996 ◽  
Vol 42 (1) ◽  
pp. 19-30 ◽  
Author(s):  
S.A.R. Sultan ◽  
F. Ahmad ◽  
D. Nassar
Keyword(s):  
Sea Level ◽  
Red Sea ◽  
Mean Sea Level ◽  
Relative Contribution ◽  
External Sources ◽  
Sea Level Variations

Internal and external sources of mean sea level variations

1985 ◽  
Vol 90 (C4) ◽  
pp. 7075 ◽  
Author(s):  
A. Palumbo ◽  
A. Mazzarella
Keyword(s):  
Sea Level ◽  
Mean Sea Level ◽  
External Sources ◽  
Sea Level Variations

scholarly journals Combining probability distributions of sea level variations and wave run-up to evaluate coastal flooding risks

2018 ◽  
Author(s):  
Ulpu Leijala ◽  
Jan-Victor Björkqvist ◽  
Milla M. Johansson ◽  
Havu Pellikka ◽  
Lauri Laakso ◽  
...  
Keyword(s):  
Sea Level ◽  
Probability Distributions ◽  
Field Measurements ◽  
Joint Effect ◽  
Mean Sea Level ◽  
Safety Margins ◽  
Acceptable Risks ◽  
Flooding Hazards ◽  
Sea Level Variations ◽  
Run Up

Abstract. Tools for estimating probabilities of flooding hazards caused by the simultaneous effect of sea level and waves are needed for the secure planning of densely populated coastal areas that are strongly vulnerable to climate change. In this paper we present a method for combining location-specific probability distributions of three different components: (1) long-term mean sea level change, (2) short-term sea level variations, and (3) wind-generated waves. We apply the method in two locations in the Helsinki Archipelago to obtain run-up level estimates representing the joint effect of the still water level and the wave run-up. These estimates for the present, 2050 and 2100 are based on field measurements and mean sea level scenarios. In the case of our study locations, the significant locational variability of the wave conditions leads to a difference in the safe building levels of up to one meter. The rising mean sea level in the Gulf of Finland and the uncertainty related to the associated scenarios contribute significantly to the run-up levels for the year 2100. We also present a sensitivity test of the method and discuss its applicability to other coastal regions. Our approach allows for the determining of different building levels based on the acceptable risks for various infrastructure, thus reducing building costs while maintaining necessary safety margins.

scholarly journals Seasonal global water mass budget and mean sea level variations

1998 ◽  
Vol 25 (19) ◽  
pp. 3555-3558 ◽  
Author(s):  
J. L. Chen ◽  
C. R. Wilson ◽  
D. P. Chambers ◽  
R. S. Nerem ◽  
B. D. Tapley
Keyword(s):  
Sea Level ◽  
Water Mass ◽  
Mean Sea Level ◽  
Mass Budget ◽  
Sea Level Variations ◽  
Global Water

scholarly journals Imprints of wave climate and mean sea level variations in the dynamics of a coastal spit over the last 250 years: Cap Ferret, SW France

2019 ◽  
Vol 44 (11) ◽  
pp. 2112-2125 ◽  
Author(s):  
Alphonse Nahon ◽  
Déborah Idier ◽  
Nadia Sénéchal ◽  
Hugues Féniès ◽  
Cyril Mallet ◽  
...  
Keyword(s):  
Sea Level ◽  
Wave Climate ◽  
Mean Sea Level ◽  
Sea Level Variations ◽  
Sw France

scholarly journals Sea-level variations on the north and northwest coasts of Spain

2012 ◽  
Vol 69 (5) ◽  
pp. 720-727 ◽  
Author(s):  
María Jesús García ◽  
Elena Tel ◽  
Joaquín Molinero
Keyword(s):  
Sea Level ◽  
North Atlantic ◽  
Extreme Values ◽  
Mean Sea Level ◽  
Sea Levels ◽  
The North ◽  
Glacial Rebound ◽  
Sea Level Variations ◽  
The Mean ◽  
Range Of Variation

Abstract García, M. J., Tel, E., and Molinero, J. 2012. Sea-level variations on the north and northwest coasts of Spain. – ICES Journal of Marine Science, 69: 720–727. An exhaustive analysis of historical sea-level records at three stations located along the northern and northwestern Spanish coast has permitted a description of the mean sea-level trend over the past 67 years. The analysis also produced results on the type, amplitude, and propagation of tides, as well as on the range of variation in the sea level, extreme values, and return periods. Once corrected for the Post Glacial Rebound, the rise in the mean sea level was estimated at 2.38, 2.45, and 2.65 mm year−1 in Santander, A Coruña, and Vigo, respectively. The meteorological contribution is evaluated by the winter North Atlantic Oscillation index, producing a correlation of −0.658 with the empirical orthogonal function mode 1, which explained 81.86% of the total variance of winter (from December to March) mean sea levels. Harmonic analysis evidenced the semi-diurnal nature of the tide and showed that the amplitude and propagation of the M2 tidal wave followed the North Atlantic regional pattern, with decreasing amplitudes and phases from east to west. Hourly height levels were run through an extreme analysis and resulted in maximum sea-level values over the respective mean sea levels (datum): 2.55, 2.48, and 2.51 m in Santander, A Coruña, and Vigo, respectively. The estimated extreme levels for a 120-year return period exceeded the observed maxima in the three locations by 0.25, 015, and 0.10 m, respectively.

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