Project's information

Project's title Research and development of several potential field methods on studying the deep structure of the Earth’s crust: Applying to study the structure of the Earth’s crust in the abyssal plain of ​​the East Sea of ​​Vietnam and ajacent area
Project’s code VAST06.02/22-23
Research hosting institution Institute of Marine Geology and Geophysics
Project leader’s name PhD. Tran Van Kha
Project duration 01/01/2022 - 31/12/2023
Project’s budget 600 million VND
Classify Grade B
Goal and objectives of the project

- Research and development of downward continuation method and potential field methods to determine the boundary of geological bodies on several theoretical models.
- Applying these methods to map the Bouguer gravity anomaly, magnetic anomaly. Consequently, a geologic diagram of the deep structure of the Earth’s crust in the abyssal plain of ​​the East Sea of ​​Vietnam and ajacent area has been constructed based on these magnetic and gravity data.

Main results
- Theoretical results:
+ The project has published 02 international articles in the SCI-E index.
+ Scientific report on popular downward continuation methods and our improvements.
+ Scientific report on popular potential field methods for determining the boundary of geological bodies and our improvements.
+ Bathymetric map in the study area at a scale of 1:250.000.
+ Map of the redatuming of Bouguer gravity anomaly to the seafloor in the study area at a scale of 1:500.000.
+ Map of the redatuming of Magnetic anomaly to the seafloor in the study area at a scale of 1:500.000.
+ Geologic diagram of faults in the study area
+ Map of the Cenozoic sediment thickness in the study area at a scale of 1:500.000.
+ Map to the depth of Moho in the study area at a scale of 1:500.000.
- Applied results:
+ The improvement techniques in this project can be applied in other areas. 
+ The downward continuation potential field data to the seafloor can be used to study the structural characteristics of the Earth’s crust in the abyssal plain of ​​the East Sea of ​​Vietnam and ajacent area.
Novelty and actuality and scientific meaningfulness of the results
The project has succeeded in developing potential field methods for studying the deep structure of the Earth’'s crust.

 

Products of the project
- Scientific papers in referred journals (list):
+ Nguyen Nhu Trung, Tran Van Kha, Bui Van Nam, 2022. Efficient setup of initial model for solving 2D gravity anomaly inverse problem based on the normalized full gradient method. Mar Geophys Res 43, 39 https://doi.org/10.1007/s11001-022-09504-x
+ - Nguyen Nhu Trung, Bui Van Nam, Tran Van Kha, 2023. Three-dimensional direct gravity inversion for Moho and basement depths of the TuchinhVungmay basin, offshore southeast Vietnam, incorporating a lithosphere thermal gravity anomaly correction. Geocarto International, Vol. 38, No. 1, 2178522, https://doi.org/10.1080/10106049.2023.2178522