QUANTITATIVE ANALYTICAL RESULTS ON TOPOGRAPHIC FEATURE OF THE VIETNAM’S CONTINENTAL SHELF WITHIN COORDINATES 11.7 - 14.00 AND 109.5 - 110.20

Phi Truong Thanh
Author affiliations

Authors

  • Phi Truong Thanh Hanoi University of Natural Resources and Environment

DOI:

https://doi.org/10.15625/1859-3097/16/4/8364

Keywords:

Three dimensional (3D) map, slope map, aspect map, continental slope, slope angle.

Abstract

This paper presents some analytical results of bathymetry data according to three maps: Three dimensions (3D), slope, aspect on the continental slope and shelf area in the central part of Vietnam within the coordinates of 11.7 - 14.00 and 109.5 - 110.20. The obtained results have reflected clearly the geomorphic characteristics in this area. For example, on the 3D map, the continental slope exists three steps at the depths of 500 - 700 m, 1,250 m, and 1,500 - 1,700 m, running along the meridian 109.70, about 250 km long. These results are also shown on the slope and aspect map. On the slope map, from the depth of about 250 m to the first step base, the slope angle varies within 5 - 200 and from the first step base to second step base, the slope angle varies within 5 - 100; In the remaining part, the slope angle varies within 2 - 80. The other analytical results from the aspect map are also shown clearly, the aspect direction on the wall of three slope steps varies from 50 to 1000, reflecting the topographic slope towards the east, where is abyssal plain. The existence of Pliocene - Quaternary sediments along with steep continental slope caused landslide phenomenon in this area.

Downloads

Download data is not yet available.

Metrics

Metrics Loading ...

References

Tran Tuan Dung, Phi Truong Thanh, Nguyen Bich Lien, 2014. Determining and analysing submarine landslide status on the South Central Vietnam continental shelf by using multibeam data. Journal of Marine Science and Technology, 14(4A): 26-34. (In Vietnamese).

Tran Tuan Dung, Phi Truong Thanh, Nguyen Thi Hai Ha, Nguyen Thi Huong, Pham Thi Xuan Nga, 2014. Submarine landslide potential on the continental shelf in the South Center of Vietnam. Proceedings of International Symposium on Geoinformatics for Spatial-Infrastructure Development in Earth & Allied Sciences GIS-IDEA, pp. 230-235.

Le Duc An, 1998. Some geomorphological characteristics of the sea floor around Truong Sa archipelago and adjacent areas. A selection of the researches on natural conditions and resources in Truong Sa archipelago. Publishing House for Science and Technology, pp. 37-42. (In Vietnamese).

Nguyen The Tiep, 1998. Geomorphological and geological features of the Truong Sa archipelago. A selection of the researches on natural conditions and resources in Truong Sa archipelago. Publishing House for Science and Technology, pp. 26-36. (In Vietnamese).

Do Tuyet, 1978. Geomorphological features of the Truong Sa archipelago. Journal of Geology, 136. (In Vietnamese).

Phi Truong Thanh, Tran Tuan Dung, 2014. Assessing submarine landslide status by using seabed topography 3D model and fault structure on South Central Vietnam’s continental shelf. Journal of Marine Science and Technology, 14(4): 348-357. (In Vietnamese). DOI: https://doi.org/10.15625/1859-3097/14/4/5821

Downloads

Published

30-12-2016

How to Cite

Thanh, P. T. (2016). QUANTITATIVE ANALYTICAL RESULTS ON TOPOGRAPHIC FEATURE OF THE VIETNAM’S CONTINENTAL SHELF WITHIN COORDINATES 11.7 - 14.00 AND 109.5 - 110.20. Vietnam Journal of Marine Science and Technology, 16(4), 337–345. https://doi.org/10.15625/1859-3097/16/4/8364

Issue

Section

Articles