Vertical Land Motion in the Mediterranean Sea from Altimetry and Tide Gauge Stations

被引:42
作者
Fenoglio-Marc, Luciana [1 ]
Dietz, Carola [1 ]
Groten, Erwin [1 ]
机构
[1] Tech Univ Darmstadt, Inst Phys Geodesy, Petersenstr 13, D-64287 Darmstadt, Germany
关键词
vertical land motion; sea level change; altimetry; tide gauge;
D O I
10.1080/01490410490883441
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
We have computed estimates of the rate of vertical land motion in the Mediterranean Sea from differences of sea level heights measured by the TOPEX/Poseidon radar altimeter and by a set of tide gauge stations. The comparison of data at 16 tide gauges, using both hourly data from local datasets and monthly data from the PSMSL dataset, shows a general agreement, significant differences are found at only one location. Differences of near-simultaneous, monthly and deseasoned monthly sea level height time-series have been considered in order to reduce the error in the estimated linear-term. In a subset of 23 tide gauge stations the mean accuracy of the estimated vertical rates is 2.3 +/- 0.8 mm/yr. Results for various stations are in agreement with estimates of vertical land motion from geodetic methods. A comparison with vertical motion estimated by GPS at four locations shows a mean difference of -0.04 +/- 1.8 mm/yr, however the length of the GPS time-series and the number of locations are too small to draw general conclusions.
引用
收藏
页码:683 / 701
页数:19
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