Temporal changes in the response of the nodal modulation of the M2 tide in the Gulf of Maine

被引：19
作者：
Pan, Haidong [1 ,2 ]
Zheng, Quanxin [1 ,2 ]
Lv, Xianqing [1 ,2 ]
机构：
[1] Ocean Univ China, Key Lab Phys Oceanog, Qingdao 266003, Shandong, Peoples R China
[2] Qingdao Natl Lab Marine Sci & Technol, Qingdao 266100, Shandong, Peoples R China
来源：
CONTINENTAL SHELF RESEARCH | 2019年 / 186卷
基金：
中国国家自然科学基金;
关键词：
Enhanced harmonic analysis; Tides; Nodal cycle; Gulf of Maine; COLUMBIA RIVER ESTUARY; SEA-LEVEL; BAY; VARIABILITY; FUNDY; MODEL; OCEAN;
D O I：
10.1016/j.csr.2019.07.007
中图分类号：
P7 [海洋学];
学科分类号：
0707 ;
摘要：
Accurate estimation of the changes of tides is important for sea level prediction and fundamental for local coastal planning. Here we use a novel method, enhanced harmonic analysis (EHA), to extract temporal changes in the response of the nodal modulation of the M-2 tide in the Gulf of Maine. The results show that the temporal variations of nodal amplitudes at four stations in the Gulf of Maine are similar from 1970s to 2013. They all increase in the 1970s to peak values in the 1985s and in the 2000s they decrease to minimum values. The North Atlantic Oscillation (NAO), which is one of the major climate modes in the North Atlantic Ocean, may be responsible for temporal changes in the response of the nodal modulation of the M-2 tide from 1970s to 2013. Also, the results obtained by the new method indicate that the traditional method of harmonic analysis slightly underestimates the trend of M-2 amplitude in the Gulf of Maine.
引用
收藏
页码：13 / 20
页数：8
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