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Leogane Fault

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Journal Article
Published: 01 August 2013
Bulletin of the Seismological Society of America (2013) 103 (4): 2326–2343.
...Steeve J. Symithe; Eric Calais; Jennifer S. Haase; Andrew M. Freed; Roby Douilly Abstract The 12 January 2010 M w 7.0 Haiti earthquake ruptured the previously unmapped Léogâne fault, a secondary transpressional structure located close to the Enriquillo fault, the major fault system assumed...
FIGURES | View All (14)
Journal Article
Published: 01 August 2013
Bulletin of the Seismological Society of America (2013) 103 (4): 2305–2325.
... geodetic measurements and its geomorphic expression to be capable of producing M 7 or larger earthquakes. Global Positioning Systems ( GPS ) and Interferometric Synthetic Aperture Radar (InSAR) data, however, showed that the event ruptured a previously unmapped fault, the Léogâne fault, a north‐dipping...
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Image
(a) Interpretive cross section for the <span class="search-highlight">Léogâne</span> fan and dashed blue line sho...
Published: 15 February 2016
Figure 12. (a) Interpretive cross section for the Léogâne fan and dashed blue line showing the proposed fault geometry for the Léogâne fault blind reverse fault (modified from Douilly et al., 2015 ). (b) Free-air corrected gravity results, B-B′. (c) Time-migrated seismic section for line A.
Image
Integration of observations of coseismic folding during the 2010 Haiti eart...
Published: 15 February 2016
of Léogâne with the coverage of line A indicated. (c) Aftershock events ( Douilly et al., 2015 ) in the vicinity of line A. (d) Aftershock events around the north–south paved highway approximately 3 km east of our lines with the proposed geometry for the Léogâne fault shown. As obtained from seismic data
Image
Relocated aftershocks for the 10 February to 24 June 2010 time interval in ...
Published: 01 August 2013
occur on the Léogâne fault, which consists of two subfaults dipping 70° and 65° to the north, respectively. Cross sections shows the north‐dipping structures delineated by the aftershock distribution associated with the Léogâne rupture (red lines on cross‐sections AB and CD) and Trois Baies fault (green
Image
Cross sections perpendicular to the Enriquillo <span class="search-highlight">fault</span> illustrating possible ...
Published: 01 August 2013
line shows the main earthquake rupture on the Léogâne fault; blue lines show the Trois Baies thrust fault; green lines show south‐dipping antithetic structures delineated by aftershocks possibly triggered by Coulomb stress changes following the mainshock. The black lines in the cross sections show
Journal Article
Journal: Interpretation
Published: 15 February 2016
Interpretation (2016) 4 (1): T49–T61.
...Figure 12. (a) Interpretive cross section for the Léogâne fan and dashed blue line showing the proposed fault geometry for the Léogâne fault blind reverse fault (modified from Douilly et al., 2015 ). (b) Free-air corrected gravity results, B-B′. (c) Time-migrated seismic section for line A. ...
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Journal Article
Journal: The Leading Edge
Published: 01 December 2014
The Leading Edge (2014) 33 (12): 1372–1377.
... program, to try to help build Haiti's geophysical capability and assist in finding subsurface evidence of the proposed blind fault. The team reconnoitered the epicentral region of the 2010 earthquake and selected sites on the Léogâne delta fan for land surveys. The team enjoyed a productive and pleasant...
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Image
Model rupture geometries tested. Model A considers slip on a northern‐dippi...
Published: 01 August 2013
Figure 3. Model rupture geometries tested. Model A considers slip on a northern‐dipping eastern segment (L1) of the Léogâne rupture (red) along with slip on a western extension (L2) of the Léogâne rupture (blue). Model B also assumes slip on the eastern segment of the Léogâne rupture (red
Image
Google Earth images of the Caribbean region and the <span class="search-highlight">Léogâne</span> area. The locat...
Published: 01 December 2014
Figure 2. Google Earth images of the Caribbean region and the Léogâne area. The location of geophysical surveys (colored lines) with respect to the city of Léogâne and the Enriquillo–Plantain Garden fault zone (ENPGZ) (white dashed line) are drawn.
Image
(a) Deformation of the <span class="search-highlight">Léogâne</span> area along with the interferogram and bathym...
Published: 15 February 2016
folding axis above the blind Léogâne thrust fault is shown as a dashed red line. (b) Satellite photograph of a coral reef off the coast of the Léogâne fan delta before the earthquake (from Google Earth, 2005). (c) Satellite photograph of the coral reef uplifted after the earthquake (from Google Earth
Journal Article
Published: 14 February 2018
Seismological Research Letters (2018) 89 (2A): 407–415.
... pointed to most of the rupture occurring on the previously unknown Léogâne fault just to the north of and roughly parallel to the EPGF ( Calais et al. , 2010 ; Hayes et al. , 2010 ). The rupture sequence was complex and some motion on the EPGF and on the Trois Baies fault (at the western end...
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Journal Article
Published: 12 July 2022
Bulletin of the Seismological Society of America (2022)
...Stacey S. Martin; Susan E. Hough ABSTRACT The grave threat posed by the Enriquillo‐Plantain Garden fault zone (EPGFZ) and other fault systems on the Tiburon Peninsula in southern Haiti was highlighted by the catastrophic M 7.0 Léogâne earthquake on 12 January 2010 and again by the deadly M 7.2...
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Image
Local seismicity in Haiti from June 2013 to June 2014 and focal mechanisms ...
Published: 30 September 2019
; EPGFZ—Enriquillo-Plantain-Garden fault zone. Enlargement: Enriquillo Lake. Numbers are for: 1—Artibonite Valley; 2—Cul-de-Sac Basin; 3—Sierra de Bahoruco; 4—L’Asile Basin; 5—Miragoâne Lake; and 6—Leogâne fan delta.
Journal Article
Journal: Geology
Published: 01 August 2011
Geology (2011) 39 (8): 723–726.
... paleoseismicity; the event was complex and it remains unclear which faults were involved. The epicenter was within a few kilometers from the EPGF, but the slip process could have occurred in multiple faults, including the Leogane fault ( Hayes et al., 2010 ; Prentice et al., 2010 ; Calais et al., 2010...
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Image
(a) Location of the island of Hispaniola (inside the blue box) in the north...
Published: 15 February 2016
Figure 1. (a) Location of the island of Hispaniola (inside the blue box) in the northern Caribbean. (b) Active, left-lateral strike-slip faults shown in red in the Hispaniola region separating the Gonâve microplate from the larger North America Plate to the north and Caribbean Plate to the south
Journal Article
Journal: The Leading Edge
Published: 01 December 2014
The Leading Edge (2014) 33 (12): 1378–1384.
... earthquake occurred near Léogâne, approximately 20 km west of Port-au-Prince along the Enriquillo–Plantain Garden fault system ( Figure 1 ). It impacted a large, densely populated area of Haiti, including Port-au-Prince, with a population of 1.2 million, where Modified Mercalli Intensity (MMI) shaking...
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Journal Article
Published: 01 February 2012
Bulletin of the Seismological Society of America (2012) 102 (1): 18–30.
... rupture of the 2010 mainshock, is located along the Enriquillo fault from the white star to the 1701 earthquake orange star. The small green circles are the locations of towns mentioned in the text: A, Old Azua; AaV, Anse a Veau; C, Cotui; CdS, Cul‐de‐Sac; CH, Cap Haitien; H, Hinche; L, Leogane; LC, Les...
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Image
Map of Hispaniola (Haiti and the Dominican Republic). <span class="search-highlight">Fault</span> traces are show...
Published: 01 February 2012
Figure 1. Map of Hispaniola (Haiti and the Dominican Republic). Fault traces are shown as black lines (barbed, thrust; solid, strike‐slip; black and white, normal). The arrow shows the direction of the North American plate motion relative to the Caribbean plate. The intensity centers
Journal Article
Journal: Geosphere
Published: 01 August 2012
Geosphere (2012) 8 (4): 787–804.
... foothills is between the main range to the south and the Léogâne fan to the north. The northern edge of these foothills is poorly delineated due to low relief and extensive embayment ( Fig. 2B ), and we found no clear, throughgoing fault trace along this range front. Between Dufort and L'Acul, the range...
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