Skip to content. | Skip to navigation

Laboratoire d’Etudes en Géophysique et Océanographie Spatiales

Personal tools

This is SunRain Plone Theme

Navigation

You are here: Home / Events / Seminars / Seminaires Septembre 2017-Aout 2018 / Jeudi 5 Avril - Coastal erosion of the Mekong delta: from processes to countermeasures

Jeudi 5 Avril - Coastal erosion of the Mekong delta: from processes to countermeasures

by SEMSOU last modified Mar 21, 2018 10:37 AM
When Apr 05, 2018
from 02:00 PM to 03:00 PM
Where salle Lyot
Add event to calendar vCal
iCal



Patrick Marchesiello

LEGOS

 

Title: Coastal erosion of the Mekong delta: from processes to countermeasures

 

Abstract: The Lower Mekong Delta Coastal Zone (LMDCZ) is emblematic of the coastal erosion problem in tropical delta regions. It has been generated by very large sedimentary fluxes reaching the ocean, but modulated also by waves and currents, which, in combination, redistribute the river intake to the southwest. This process has formed the southern tip of Vietnam for the last 3500 years. But now, in addition to natural forces, the LMDCZ is affected by local human activity, including reduction of river fluxes due to damming and sand mining, and reduction of protective coastal mangroves in favor of agriculture and aquaculture. Relative sea level rise is also a major challenge, although global warming is a minor factor in the current situation when compared with land subsidence due to groundwater extraction. Here, we present the findings of a European-Vietnamese project with the dual objectives of: 1) better assessing the hierarchy of causality for observed erosion patterns; and 2) proposing engineering solutions at two specific sites. A discussion on various aspects of coastal science is proposed based on questions that emerged from the project, e.g., what are the paradigms needed for understanding coastal erosion and protection measures in delta coastal zones? How do we handle the gap between science and civil engineering as researchers, particularly at IRD?


L'exposé sera donné en français

Document Actions

Navigation