Titre :

Influence of recent climatic events on the surface water storage of the Tonle Sap Lake

Auteur(s) :

Frappart, Frédéric [Auteur]
Géosciences Environnement Toulouse [GET]
Biancamaria, Sylvain [Auteur]
Laboratoire d'études en Géophysique et océanographie spatiales [LEGOS]
Normandin, C. [Auteur]
Environnements et Paléoenvironnements OCéaniques [EPOC]
Blarel, F. [Auteur]
Laboratoire d'études en Géophysique et océanographie spatiales [LEGOS]
Bourrel, L. [Auteur]
Géosciences Environnement Toulouse [GET]
Aumont, M. [Auteur]
Laboratoire d'études en Géophysique et océanographie spatiales [LEGOS]
Azemar, P. [Auteur]
Laboratoire d'études en Géophysique et océanographie spatiales [LEGOS]
Vu, P. L. [Auteur]
Laboratoire d'études en Géophysique et océanographie spatiales [LEGOS]
Le Toan, Thuy [Auteur]
Centre d'études spatiales de la biosphère [CESBIO]
Lubac, B. [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Darrozes, J. [Auteur]
Laboratoire des Mécanismes et Transfert en Géologie [LMTG]

Titre de la revue :

Science of the Total Environment

Pagination :

1520-1533

Éditeur :

Elsevier

Date de publication :

2018

ISSN :

0048-9697

Mot(s)-clé(s) en anglais :

Surface water storage
Rainfall
ENSO
PDO
Monsoon
EVI
Mekong Basin
Multi-satellite

Discipline(s) HAL :

Planète et Univers [physics]/Sciences de la Terre/Hydrologie
Planète et Univers [physics]/Interfaces continentales, environnement

Résumé en anglais : [en]

Lakes and reservoirs have been identified as sentinels of climate change. Tonle Sap is the largest lake in both the Mekong Basin and Southeast Asia and because of the importance of its ecosystem, it is has been described ...
Lire la suite >Lakes and reservoirs have been identified as sentinels of climate change. Tonle Sap is the largest lake in both the Mekong Basin and Southeast Asia and because of the importance of its ecosystem, it is has been described as the “heart of the lower Mekong”. Its seasonal cycle depends on the annual flood pulse governed by the flow of the Mekong River. This study provides an impact analysis of recent climatic events from El Niño 1997/1998 to El Niño 2015/2016 on surface storage variations in the Tonle Sap watershed determined by combining remotely sensed observations, multispectral images and radar altimetry from 1993 to 2017. The Lake's surface water volume variations are highly correlated with rainy season rainfall in the whole Mekong River Basin (R = 0.84) at interannual time-scale. Extreme droughts and floods can be observed when precipitation deficit and excess is recorded in both the Tonle Sap watershed and the Mekong River Basin during moderate to very strong El Niño/La Niña events (R = −0.70) enhanced by the Pacific Decadal Oscillation (R = −0.68). Indian and Western North Pacific Monsoons were identified as having almost equal influence. Below normal vegetation activity was observed during the first semester of 2016 due to the extreme drought in 2015.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Laboratoire d'Océanologie et de Géosciences (LOG) - UMR 8187

Source :

Harvested from HAL