Volcano deformation survey over the Northern and Central Andes with ALOS InSAR time series

Anieri M. Morales Rivera, Falk C Amelung, Patricia Mothes

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We use ALOS-1 Interferometric Synthetic Aperture Radar data spanning the period of 2007–2011 to obtain time-dependent ground deformation data over all of the volcanoes in Colombia, Ecuador, and Peru. We detect deformation on or near the proximity of Galeras, Reventador, Tungurahua, Guagua Pichincha, Sangay, and Cerro Auquihuato volcanoes, uncovering previously undocumented deformation in the latter three. Deformation is attributed to changes in pressurization of the volcanic systems (Galeras, Tungurahua, Guagua Pichincha, and Cerro Auquihuato), subsidence associated with flow deposits (Reventador), and flank creep (Sangay). Our models suggest that the pressure sources are located at depths of ∼1–6 km from the surface, indicating that the measurable deformation within our data is restricted to shallow magma chambers and hydrothermal systems.

Original languageEnglish (US)
Pages (from-to)2869-2883
Number of pages15
JournalGeochemistry, Geophysics, Geosystems
Volume17
Issue number7
DOIs
StatePublished - Jul 1 2016

Fingerprint

ALOS
Volcanoes
volcanoes
Time series
volcano
time series
Ecuador
Colombia
Peru
hydrothermal systems
Pressurization
radar data
Subsidence
subsidence
synthetic aperture radar
hydrothermal system
Synthetic aperture radar
magma chamber
creep
magma

Keywords

  • Andes
  • InSAR time series
  • volcano deformation

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Volcano deformation survey over the Northern and Central Andes with ALOS InSAR time series. / Morales Rivera, Anieri M.; Amelung, Falk C; Mothes, Patricia.

In: Geochemistry, Geophysics, Geosystems, Vol. 17, No. 7, 01.07.2016, p. 2869-2883.

Research output: Contribution to journalArticle

@article{c4aa9b713fc44315bf41c7c242fb41e5,
title = "Volcano deformation survey over the Northern and Central Andes with ALOS InSAR time series",
abstract = "We use ALOS-1 Interferometric Synthetic Aperture Radar data spanning the period of 2007–2011 to obtain time-dependent ground deformation data over all of the volcanoes in Colombia, Ecuador, and Peru. We detect deformation on or near the proximity of Galeras, Reventador, Tungurahua, Guagua Pichincha, Sangay, and Cerro Auquihuato volcanoes, uncovering previously undocumented deformation in the latter three. Deformation is attributed to changes in pressurization of the volcanic systems (Galeras, Tungurahua, Guagua Pichincha, and Cerro Auquihuato), subsidence associated with flow deposits (Reventador), and flank creep (Sangay). Our models suggest that the pressure sources are located at depths of ∼1–6 km from the surface, indicating that the measurable deformation within our data is restricted to shallow magma chambers and hydrothermal systems.",
keywords = "Andes, InSAR time series, volcano deformation",
author = "{Morales Rivera}, {Anieri M.} and Amelung, {Falk C} and Patricia Mothes",
year = "2016",
month = "7",
day = "1",
doi = "10.1002/2016GC006393",
language = "English (US)",
volume = "17",
pages = "2869--2883",
journal = "Geochemistry, Geophysics, Geosystems",
issn = "1525-2027",
publisher = "American Geophysical Union",
number = "7",

}

TY - JOUR

T1 - Volcano deformation survey over the Northern and Central Andes with ALOS InSAR time series

AU - Morales Rivera, Anieri M.

AU - Amelung, Falk C

AU - Mothes, Patricia

PY - 2016/7/1

Y1 - 2016/7/1

N2 - We use ALOS-1 Interferometric Synthetic Aperture Radar data spanning the period of 2007–2011 to obtain time-dependent ground deformation data over all of the volcanoes in Colombia, Ecuador, and Peru. We detect deformation on or near the proximity of Galeras, Reventador, Tungurahua, Guagua Pichincha, Sangay, and Cerro Auquihuato volcanoes, uncovering previously undocumented deformation in the latter three. Deformation is attributed to changes in pressurization of the volcanic systems (Galeras, Tungurahua, Guagua Pichincha, and Cerro Auquihuato), subsidence associated with flow deposits (Reventador), and flank creep (Sangay). Our models suggest that the pressure sources are located at depths of ∼1–6 km from the surface, indicating that the measurable deformation within our data is restricted to shallow magma chambers and hydrothermal systems.

AB - We use ALOS-1 Interferometric Synthetic Aperture Radar data spanning the period of 2007–2011 to obtain time-dependent ground deformation data over all of the volcanoes in Colombia, Ecuador, and Peru. We detect deformation on or near the proximity of Galeras, Reventador, Tungurahua, Guagua Pichincha, Sangay, and Cerro Auquihuato volcanoes, uncovering previously undocumented deformation in the latter three. Deformation is attributed to changes in pressurization of the volcanic systems (Galeras, Tungurahua, Guagua Pichincha, and Cerro Auquihuato), subsidence associated with flow deposits (Reventador), and flank creep (Sangay). Our models suggest that the pressure sources are located at depths of ∼1–6 km from the surface, indicating that the measurable deformation within our data is restricted to shallow magma chambers and hydrothermal systems.

KW - Andes

KW - InSAR time series

KW - volcano deformation

UR - http://www.scopus.com/inward/record.url?scp=84979202515&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84979202515&partnerID=8YFLogxK

U2 - 10.1002/2016GC006393

DO - 10.1002/2016GC006393

M3 - Article

AN - SCOPUS:84979202515

VL - 17

SP - 2869

EP - 2883

JO - Geochemistry, Geophysics, Geosystems

JF - Geochemistry, Geophysics, Geosystems

SN - 1525-2027

IS - 7

ER -