2004/OCT/05

Groundwater Monitoring Network in Taiwan and it's meaning to  Earthquake 
induced Hydrological Changes.

Youe-Ping Lee (經濟部水利署)

Abstract
========
This presentation is to introduce the stages results of the "Groundwater 
Monitoring Network in Taiwan." The plan is a 17-year project beginning from 
1992 to 2008 for the purpose of improving groundwater monitoring in Taiwan 
area.  A total of 517 hydrogeological survey stations and 990 groundwater 
monitoring wells will be constructed in order to set up the information 
system on hydrogeology and groundwater hydrology.  The first stage (1992 to 
1998) and second stage (1999 to 2003) of the plan completed 220 
hydrogeological survey stations and 550 groundwater monitoring wells 
distribute all around the Taiwan island. Because of the network with 
spatial high density and the observation managed in systematize, the result 
of the network offers the good opportunity to revealed the earthquake 
induced hydrological changes.

We make a brief review for the past three years, and to introduce the 
recently results of the project. Follow the experience of last three years; 
we reorganize our main work for the future. Also revise the strategy to the 
scientific challenge. Beside the establishment of the good quality 
observation devices and monitoring system have been promote continuously. 
In the other related works, including (1) amplify effect of the signal from 
the resonate of well-aquifer system, (2) molding of a strain - pressure 
coupling system, (3) estimation of the rainfall effect to ground water 
level, (4) detecting the anomalies changes using static methods (5) radon 
monitoring in the groundwater. All the research items have planned to 
construct the different base of the project. The information system will be 
applied to groundwater monitoring and management.  It is hoped that the 
conjunctive comparison from timing and spatial distribution of the 
earthquake induced physical and chemical changes of the groundwater can 
give insight into the problems that can't solved by limited observations. 
The observation of the network also can act as the experimental platform to 
test the model been used in different mechanism.