TY - JOUR
T1 - Rates and causes of recent global sea-level rise inferred from long tide gauge data records
AU - Nakada, Masao
AU - Inoue, Hiroshi
N1 - Funding Information:
The authors wish to thank J.X. Mitrovica and two anonymous reviewers for constructive and helpful reviews, and the editor (Peter Clark) for his efforts. This work was partly supported by the Japan Society for the Promotion of Science (JSPS) (Grand-in-Aid for Scientific Research (C) No. 14540396). A software package, Genetic Mapping Tool (GMT), was used to plot figures.
PY - 2005/5
Y1 - 2005/5
N2 - Tide gauge data at seven sites of the Permanent Service for Mean Sea Level (PSMSL), with information for relative sea-level during the past 140-200 yr, were analyzed to examine the rates and causes of the global sea-level rise (GSLR) during the twentieth century. By subtracting linear trends for relative sea-level rise during the past 100 yr from the observed data, we get the apparent GSLRs of ∼1 mm yr-1 for five sites around the Baltic Sea and Brest. The rate for San Francisco is significantly larger than this, with an optimum value ∼2 mm yr-1. The spatial difference of ∼1 mm yr-1 between these sites is reasonably explained by the recent melting of the Greenland ice sheet with an equivalent sea-level rise of ∼1 mm yr-1. The predicted relative sea-level change for this melting scenario is 0.5 mm yr-1 at sites around the Baltic Sea and Brest, and 1.5 mm yr-1 for San Francisco. The residuals between observations and predictions, ∼0.5 mm yr-1 at all sites, may be contributed by thermal expansion of seawater and/or other melting sources. These results suggest the rate of twentieth-century GSLR to be 1.5 mm yr-1.
AB - Tide gauge data at seven sites of the Permanent Service for Mean Sea Level (PSMSL), with information for relative sea-level during the past 140-200 yr, were analyzed to examine the rates and causes of the global sea-level rise (GSLR) during the twentieth century. By subtracting linear trends for relative sea-level rise during the past 100 yr from the observed data, we get the apparent GSLRs of ∼1 mm yr-1 for five sites around the Baltic Sea and Brest. The rate for San Francisco is significantly larger than this, with an optimum value ∼2 mm yr-1. The spatial difference of ∼1 mm yr-1 between these sites is reasonably explained by the recent melting of the Greenland ice sheet with an equivalent sea-level rise of ∼1 mm yr-1. The predicted relative sea-level change for this melting scenario is 0.5 mm yr-1 at sites around the Baltic Sea and Brest, and 1.5 mm yr-1 for San Francisco. The residuals between observations and predictions, ∼0.5 mm yr-1 at all sites, may be contributed by thermal expansion of seawater and/or other melting sources. These results suggest the rate of twentieth-century GSLR to be 1.5 mm yr-1.
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U2 - 10.1016/j.quascirev.2004.11.006
DO - 10.1016/j.quascirev.2004.11.006
M3 - Article
AN - SCOPUS:14944357346
VL - 24
SP - 1217
EP - 1222
JO - Quaternary Science Reviews
JF - Quaternary Science Reviews
SN - 0277-3791
IS - 10-11
ER -