Some preliminary results of paleo-tsunami study in the coastal region of the Nghe An province, Vietnam

Cao Dinh Trieu; Lai Van Dung; Mai Xuan Bach; Pham Nam Hung; Cao Dinh Trong; Thai Anh Tuan; Phan Thanh Quang; Pham Thi Hien; Nguyen Dac Cuong

doi:10.15625/1859-3097/17/4B/12998

Author affiliations

Authors

Cao Dinh Trieu Institute of Geophysics, VAST
Lai Van Dung Institute of Geophysics, VAST
Mai Xuan Bach Institute of Geophysics, VAST
Pham Nam Hung Institute of Geophysics, VAST
Cao Dinh Trong Institute of Geophysics, VAST
Thai Anh Tuan Institute of Geophysics, VAST
Phan Thanh Quang Institute of Geophysics, VAST
Pham Thi Hien Institute of Geophysics, VAST
Nguyen Dac Cuong Institute of Geophysics, VAST

DOI:

https://doi.org/10.15625/1859-3097/17/4B/12998

Keywords:

Paleo-tsunami, arca granosa, placura placenta, Nghe An province (Vietnam).

Abstract

In the coastal region of the Nghe An province, the geomorphology is characterized by appearances of fields of arca granosa with placura placenta and hills of placura placenta with arca granosa, namely: The hills of placura placenta with the arca granosa shells in the Quynh Van and Nghi Tien communes; the fields of arca granosa with the placura placenta: deep-seated in the Quynh Nghia, Dien Chau and along the Nghi Yen coast which have age of 4,500 - 4,300 yrs.; The appearance of the placura placenta-arca granosa shell’s fields and hills which do not originate from either marine transgression in the Holocene epoch, tectonic movement or artificiality; Our results suggest that there were three tsunami events occurring in the past during the periods of 4,500 - 4,300; 4,100 - 3,900 and 900 - 600 yrs., respectively in the region.

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References

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