Determing The Existence Depth Of Source Boundary

Nguyen Kim Dung^*1, Do Duc Thanh² , Nguyen The Luan¹

^*1Insittute of marine geology and geophysics, VAST, Vietnam.

²Hanoi University of Science, VNU, Vietnam.

Corresponding Author: Nguyen Kim Dung

ABSTRACT:

         The article introduce the rearch results of combination between methods to detect existence depth of source boundary. The methods is used here base on combination of derivation of the directional analytic signals amplitude of gravity gradient tensor and Euler deconvolution method with upward continuation method. Early results has built a deep fault segment diagram of faults system on the east sea. When we reference to faults system map which was built before. The results of the article has some advantages as follows :

         1). By represents follow the depth of source boundary. The results supplement more information and do more clearly of the levels of faults system: 1 st level fault, 2 nd level fault, 3 rd level fault.

         2). The results had indicated multiple location on the continental shelf of Viet Nam that has depth above 20km, even over 30km as: The 109 meridian fault has Quang Ngai segment, Phu Yen-Khanh Hoa segment, Con Dao Island, Song Hau trench (segment below 7.5 latitude), Vung May trench, ...

        3). The results also had indicated that the faults has depth in interval from 8km to 15km is prevail (55 %), while which has depth from 20km to 30km usage 8,7% and above 30km usage 4,75% (percent is caculated by point of data).

                      Date of Submission:02-10-2018            

                      Date of acceptance: 13-10-2018