SEA-LEVEL RISE AT KEY-WEST, FLORIDA, 1846-1992 - AMERICA LONGEST INSTRUMENT RECORD
SEA-LEVEL RISE AT KEY-WEST, FLORIDA, 1846-1992 - AMERICA LONGEST INSTRUMENT RECORD
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DOI：
10.1029/93gl02371
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发表时间：
1993-09-15
影响因子：
5.2
通讯作者：
MARTIN, DM
中科院分区：
文献类型：
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作者：
MAUL, GA;MARTIN, DM
佛罗里达州基韦斯特的连续海平面序列始于1913年，但我们发现可以追溯到1846年的零星测量。根据美国陆军工程兵团和美国海岸与大地测量局的记录，海平面系列已连接到一个汇总(公共)基准面。因此，一个令人兴奋的月和年平均高度记录(H[t])，也许是美国旧金山(约1854年)或纽约(约1856年)上最长的序列，可以进行测试，以确定该地点相对海平面的上升是否是稳定的。应用一阶、二阶最小二乘法和两相回归分析，dh/dt为0.19+/-0.01 cm/yr，dh-2/dt_2=[9.6+/-8.6].10(-3)cm/yr，两相回归显示1925年前后H[t]分别上升0.15+/-0.03 cm/yr和0.23+/-0.01 cm/yr。二阶回归系数、dh-2/dt_2和两阶段计算均未达到75%置信度以上的显著水平，但三者与加速上升的一致性较弱。对于1951-1987年，基韦斯特海平面，经冰川后反弹校正后，最好的解释是同时测量的0-1000分贝动态高度异常变化。
The continuous series of sea level at Key West, Florida commenced in 1913, but we have discovered sporadic measurements that date back to 1846. From records at the U.S. Army Corps of Engineers and the U.S. Coast and Geodetic Survey, the sea level series has been connected to a Summary (common) Datum. Thus, a gappy record of monthly and annual mean heights (H[t]), perhaps the United States' longest series over San Francisco (ca. 1854) or New York (ca. 1856), can be tested to ascertain if the rise in relative sea level at this site is stationary. Applying first and second order least squares and two-phase regression analyses, we find that dH/dt is 0.19+/-0.01 cm/yr, and that dH-2/dt2= [9.6+/-8.6].10(-3) cm/yr; the two-phase regression shows H[t] rising 0.15+/-0.03 cm/yr before ca. 1925 and 0.23+/-0.01 cm/yr afterwards. Neither the second-order regression coefficient nor dH-2/dt2 nor the two-phase calculation are significant above the 75% confidence level, but all three are weakly consistent with accelerated rise. For the epoch 1951-1987, Key West sea level, corrected for post-glacial rebound, is best explained by concurrent measurements of 0-1,000 db dynamic height anomaly change.