Tide-induced Head Fluctuations in a Coastal Aquifer:Effects of Elastic Storage and Leakage of Submarine Outlet-capping;

This paper considers the effects of the elastic storage,the tidal loading efficiency and leakage of the seabed silt-layer on the tide-induced head fluctuations in a coastal confined aquifer.

This paper explores the tide-induced groundwater head fluctuation in a coastal multi-layered aquifer system with a suboutcrop covered by a silt layer.

sea tide and wind have been Prohed.

While it is well known that the groundwater level in coastal areas fluctuates frequently due to tidal seawater, it is not so wellrecognized that air pressure in the subsurface soil near the coast may also fluctuate in response to sea tides.

The oceanic tide made a significant contribution to the measured gravity variation,so that the gravity variation is a curve instead of common line type.

Studying the influence of oceanic tide on the GPS control network,it is considered that in adjacent sea the rectification of oceanic tide has a several-centimeters influence on the GPS observation along the elevation orientation in a short time.

The Problem of Ocean Tide in High Precision GPS Survey;

There is a strong correlation between the vertical displacement and the zenith delay at a GPS station, so the effect of ocean tide on the precise determination of zenith delay should not be neglectable.

The expression method of the equivalent curves of ocean tide amplitude is studied in rectangular coordinate system.