SALT INTRUSION MODEL AND SYSTEM IMAGING BY USING 3-D GEOPHYSICAL INVERSION TECHNOLOGY: CASE STUDY OF TANGGERANG AREA

Convention Bandung 2004 (CB2004)
The 33rd Annual Convention & Exhibition 2004

Indonesian Association of Geologist
Horizon Hotel, 29-30 Nov, 1 Oct 2004, Bandung

SALT INTRUSION MODEL AND SYSTEM

IMAGING BY USING 3-D GEOPHYSICAL

INVERSION TECHNOLOGY: CASE STUDY OF

TANGGERANG AREA

T.A.Sanny* and Denny Juanda P**

*Departemen Teknik Geofisika ITB, **Departemen Fisika ITB

Abstract

The paper describes the application of the relatively new technology in the
world level, and the research on this is probably the first in Indonesia. From this
research works, the aquifer can be imaging by using inverse resisitivity and
GPR technology in 3-D to know salt intrusion model and system in Tangerang
Area, Banten Province. By using this technology we know a lot of subsurface
condition visually such as stratigraphy, seepage, aquifer, aquitar and etc. By
the paper, we want to show that the result of the inversion imaging of
geophysical technology is very powerfull to make the new scanning capability
in any application. As a case study experiment is Tangerang area, which is a lot
of population and industrial activities.

An interesting resistivity image of the aquifer, which shows is various of
resistivity values. High resistivity zone interpreted as aquitar and Low resisivity
zone interpreted as aquifer. Some area having very low resisitivity which
interpretated as salt water. We discuss the image reconstruction result of
auifer model and system and how to differ between salt water formation and salt
water intrusion in accuratelly.

Abstrak

Makalah mengungkapkan penerapan teknologi yang relative baru dalam tingkat
dunia, akan tetapi kemungkinan baru pertamakali diterapkan di Indonesia.
Penelitian ini mengungkapkan pencitraan akifer dengan teknologi inversi
resisitivitas dan GPR dalam 2-D dan 3-D diterapkan untuk mengetahui model
dan sistem akifer daerah Tangerang, Provinsi banten. Dengan menggunakan
teknologi ini kita dapat mengetahui banyak hal kondisi bawah permukaan
seperti struktur geologi, stratigrafi, rembasan, zona lapuk, akifer, akitar, dan
sebagainya secara visual. Dalam makalah ini kami ingin memperlihatkan
kemampuan teknologi pencitraan akifer dengan berbagai kepentingan. Sebagai
contoh kasus adalah Daerah Tangerang yang padat dengan penduduk dan
aktivitas industri.