Geodetic Mass Balances and Area Changes of Echaurren Norte Glacier (Central Andes, Chile) between 1955 and 2015

Journal article
(Original article)


Publication Details

Author(s): Farías Barahona D, Vivero S, Casassa G, Schaefer M, Burger F, Seehaus T, Iribarren-Anacona P, Escobar F, Braun M
Journal: Remote Sensing
Publication year: 2019
Volume: 11
Journal issue: 3
ISSN: 2072-4292


Abstract

The Echaurren Norte Glacier is a reference glacier for the World Glacier
Monitoring Service (WGMS) network and has the longest time series of
glacier mass balance data in the Southern Hemisphere. The data has been
obtained by the direct glaciological method since 1975. In this study,
we calculated glacier area changes using satellite images and historical
aerial photographs, as well as geodetic mass balances for different
periods between 1955 and 2015 for the Echaurren Norte Glacier in the
Central Andes of Chile. Over this period, this glacier lost 65% of its
original area and disaggregated into two ice bodies in the late 1990s.
The geodetic mass balances were calculated by differencing digital
elevation models derived from several sources. The results indicated a
mean cumulative glacier wide mass loss of −40.64 ± 5.19 m w.e. (−0.68 ±
0.09 m w.e. a−1). Within this overall downwasting trend, a positive mass balance of 0.54 ± 0.40 m w.e. a−1
was detected for the period 2000–2009. These estimates agree with the
results obtained with the glaciological method during the same time
span. Highly negative mass change rates were found from 2010 onwards,
with −1.20 ± 0.09 m w.e. a−1 during an unprecedented drought
in Central Andes of Chile. The observed area and the elevation changes
indicate that the Echaurren Norte Glacier may disappear in the coming years if negative mass balance rates prevail.


FAU Authors / FAU Editors

Braun, Matthias Prof. Dr.
Professur für Geographie (Fernerkundung und GIS)
Farías Barahona, David
Professur für Geographie (Fernerkundung und GIS)
Seehaus, Thorsten Dr.
Institut für Geographie


External institutions with authors

Ministerio de Obras Públicas de Chile (MOP)
Northumbria University
Universidad Austral de Chile
Université de Lausanne (UNIL)
University of Magallanes / Universidad de Magallanes (UMAG)


How to cite

APA:
Farías Barahona, D., Vivero, S., Casassa, G., Schaefer, M., Burger, F., Seehaus, T.,... Braun, M. (2019). Geodetic Mass Balances and Area Changes of Echaurren Norte Glacier (Central Andes, Chile) between 1955 and 2015. Remote Sensing, 11(3). https://dx.doi.org/10.3390/rs11030260

MLA:
Farías Barahona, David, et al. "Geodetic Mass Balances and Area Changes of Echaurren Norte Glacier (Central Andes, Chile) between 1955 and 2015." Remote Sensing 11.3 (2019).

BibTeX: 

Last updated on 2019-01-07 at 09:03