Near-field deformation from the El Mayor-Cucapah earthquake revealed by differential LIDAR

Michael E. Oskin, Ramon Arrowsmith, Alejandro Hinojosa Corona, Austin J. Elliott, John M. Fletcher, Eric J. Fielding, Peter O. Gold, J. Javier Gonzalez Garcia, Ken W. Hudnut, Jing Liu-Zeng, Orlando J. Teran

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Abstract

Large [moment magnitude (Mw) ≥ 7] continental earthquakes often generate complex, multifault ruptures linked by enigmatic zones of distributed deformation. Here, we report the collection and results of a high-resolution (≥nine returns per square meter) airborne light detection and ranging (LIDAR) topographic survey of the 2010 Mw 7.2 El Mayor-Cucapah earthquake that produced a 120-kilometer-long multifault rupture through northernmost Baja California, Mexico. This differential LIDAR survey completely captures an earthquake surface rupture in a sparsely vegetated region with pre-earthquake lower-resolution (5-meter-pixel) LIDAR data. The postevent survey reveals numerous surface ruptures, including previously undocumented blind faults within thick sediments of the Colorado River delta. Differential elevation changes show distributed, kilometer-scale bending strains as large as ∼103 microstrains in response to slip along discontinuous faults cutting crystalline bedrock of the Sierra Cucapah.

Original languageEnglish (US)
Pages (from-to)702-705
Number of pages4
JournalScience
Volume335
Issue number6069
DOIs
StatePublished - Feb 10 2012

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Earthquakes
Rupture
Light
Mexico
Rivers
Surveys and Questionnaires

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Oskin, M. E., Arrowsmith, R., Corona, A. H., Elliott, A. J., Fletcher, J. M., Fielding, E. J., ... Teran, O. J. (2012). Near-field deformation from the El Mayor-Cucapah earthquake revealed by differential LIDAR. Science, 335(6069), 702-705. https://doi.org/10.1126/science.1213778

Near-field deformation from the El Mayor-Cucapah earthquake revealed by differential LIDAR. / Oskin, Michael E.; Arrowsmith, Ramon; Corona, Alejandro Hinojosa; Elliott, Austin J.; Fletcher, John M.; Fielding, Eric J.; Gold, Peter O.; Garcia, J. Javier Gonzalez; Hudnut, Ken W.; Liu-Zeng, Jing; Teran, Orlando J.

In: Science, Vol. 335, No. 6069, 10.02.2012, p. 702-705.

Research output: Contribution to journalArticle

Oskin, ME, Arrowsmith, R, Corona, AH, Elliott, AJ, Fletcher, JM, Fielding, EJ, Gold, PO, Garcia, JJG, Hudnut, KW, Liu-Zeng, J & Teran, OJ 2012, 'Near-field deformation from the El Mayor-Cucapah earthquake revealed by differential LIDAR', Science, vol. 335, no. 6069, pp. 702-705. https://doi.org/10.1126/science.1213778
Oskin ME, Arrowsmith R, Corona AH, Elliott AJ, Fletcher JM, Fielding EJ et al. Near-field deformation from the El Mayor-Cucapah earthquake revealed by differential LIDAR. Science. 2012 Feb 10;335(6069):702-705. https://doi.org/10.1126/science.1213778
Oskin, Michael E. ; Arrowsmith, Ramon ; Corona, Alejandro Hinojosa ; Elliott, Austin J. ; Fletcher, John M. ; Fielding, Eric J. ; Gold, Peter O. ; Garcia, J. Javier Gonzalez ; Hudnut, Ken W. ; Liu-Zeng, Jing ; Teran, Orlando J. / Near-field deformation from the El Mayor-Cucapah earthquake revealed by differential LIDAR. In: Science. 2012 ; Vol. 335, No. 6069. pp. 702-705.
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