Nah, kalau yg terlampir ini bentuk apa ?
RDP "see more and you know more"
From: "Paulus Tangke Allo" <[EMAIL PROTECTED]> Reply-To: <[EMAIL PROTECTED]> To: [EMAIL PROTECTED], [EMAIL PROTECTED] Subject: [fogri] geomorphology..... Date: Sat, 4 Dec 2004 01:20:29 +0800
pak posamentier ikutan nimbrung soal geomorphology....
semoga semakin jelas.
-- pta
------- From "Posamentier, Henry" <[EMAIL PROTECTED]> Date Saturday, December 4, 2004 0:43 am
Thanks for your questions. I will try to answer them. Firstly, the definition of seismic geomorphology. Seismic geomorphology may be defined as the study of landforms (both subaerial as well as subaqueous) using seismic data (usually 3D data). As for the difference between seismic geomorphology and the conventional; way of interpreting seismic sections, I should stress that seismic geomorphology puts a heavy emphasis on plan view images. Using such images, landforms can be identified and interpreted from the standpoint of facies prediction, reservoir compartmentalization and stratigraphic trapping possibilities. This approach is not necessarily different from the conventional approach, it just requires an additional set of skills (i.e., an appreciation and understanding of the lithologic significance of various landforms) and causes the interpreter to ask different questions of the data. It necessarily requires that techniques of visualization and interpretation geared to identifying sometimes subtle landforms be learned and employed. There are many techniques ranging from simple horizon illumination to horizon amplitude extraction to interval attribute analyses of various kinds to coherence to surface attribute analyses including dip magnitude, dip azimuth, roughness, and curvature, to co-rendering of different attributes, to isochron (time thickness) map interpretation, to analyses of different attribute volumes (near traces, far traces, etc.). The list of different techniques that one can employ towards an understanding of geomorphology and ultimately lithology prediction is almost endless. At the end of the day, a good intyerpreter will integrate analyses of plan view images (seismic geomorphology) with analyses of section view images (seismic stratigraphy) to come up with the best interpretation.
As for the history of "seismic geomorphology", I first introduced the concept in a paper I presented at the AAPG annual convention in 2000. I have subsequently written several papers about sesimic geomorphology and its applications. This February I will be a co-convenor of a research conference specifically focusing on Seismic Geomorphology to be held in Houston, sponsored by the Geological Society of London and SEPM. In June I will be chairing a session a session at the annual AAPG conference focused untirely on seismic geomorphology. -----------
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