Space Geodetic Observations of Nazca-South America Convergence Across the Central Andes
Abstract
Space geodetic data recorded rates and directions of motion across the convergent boundary zone between the oceanic Nazca and continental South American plates in Peru and Bolivia. Roughly half of the overall convergence, about 30 to 40 millimeters per year, accumulated on the locked plate interface and can be released in future earthquakes. About 10 to 15 millimeters per year of crustal shortening occurred inland at the sub-Andean foreland fold and thrust belt, indicating that the Andes are continuing to build. Little (5 to 10 millimeters per year) along-trench motion of coastal forearc slivers was observed, despite the oblique convergence.
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GPS data indicate 30-40 mm/yr present-day crustal shortening across the Andes.
“GPS data indicate 30-40 mm yr -I present-day crustal shortening across the Andes”
From Crustal shortening in the Andes: Why do GPS rates differ from geological rates? (2000) · cites this paper as Norabuena et al., 1998
The uncertainties of present GPS data are large enough to allow alternative nonuniform interpretations of the velocity field.
“The uncertainties of present GPS data are large enough to allow alternative (nonuniform) interpretations of the velocity field [Leffier et al., 1997;Norabuena et al., 1998].”
From Crustal shortening in the Andes: Why do GPS rates differ from geological rates? (2000) · cites this paper as Norabuena et al., 1998
Cites
Constraints on present‐day shortening rate across the central eastern Andes from GPS data
Leffler, L., Stein, S., Mao, A., Dixon, T., Ellis, M. A., Ocola, L., & Sacks, I. S. (1997) · Geophysical Research Letters · doi:10.1029/97gl00770 · Cited by 28 · see citing works
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Arriagada, C., Cobbold, P. R., & Roperch, P. (2006) · Tectonics · doi:10.1029/2004tc001770 · Cited by 154 · see citing works
Short‐ and long‐term effects of GPS measured crustal deformation rates along the south central Andes
Khazaradze, G., & Klotz, J. (2003) · Journal of Geophysical Research: Solid Earth · doi:10.1029/2002jb001879 · Cited by 147 · see citing works
Crustal shortening in the Andes: Why do GPS rates differ from geological rates?
Liu, M., Yang, Y., Stein, S., Zhu, Y., & Engeln, J. (2000) · Geophysical Research Letters · doi:10.1029/2000gl008532 · Cited by 69 · see citing works
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- Authors
- Norabuena, E., Leffler-Griffin, L., Mao, A., Dixon, T., Stein, S., Sacks, I. S., Ocola, L., & Ellis, M.
- Affiliations
- Northwestern University (US)
- E. Norabuena, Instituto Geofisico del Peru, Apartado 3747, Lima 100, Peru, and Rosenstiel School for Marine and Atmospheric Sciences, University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149, USA.
- Corresponding author
- Stein, Seth
- Venue
- Science
- Published
- 1998-01-16
- Volume
- 279
- Issue
- 5349
- Pages
- 358-362
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W1494860090
- Cited by
- 293
- References
- 1
- Citations by year
- 2026: 4 · 2025: 10 · 2024: 7 · 2023: 11 · 2022: 16 · 2021: 7 · 2020: 4 · 2019: 8 · 2018: 7 · 2017: 8 · 2016: 10 · 2015: 9 · 2014: 6 · 2013: 8 · 2012: 8
- FWCI
- 17.30
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Science (publishedVersion)
- PubMed (publishedVersion)
- Digital Commons - University of South Florida (University of South Florida) (submittedVersion)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Geophysics › earthquake and tectonic studies
- Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Tectonic Studies in Latin America
- Physical Sciences › Engineering › Aerospace Engineering › GNSS positioning and interference
- Keywords
- plate motion rates, plate boundary deformation, subduction zone, foreland thrust belt, crustal shortening, Andean orogeny, oblique convergence, Peru, Bolivia
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