Landslides induced by a low magnitude seismic sequence at continental interiors: a case study of the Santa Rosa Canyon, northeastern Mexico
Por:
Salinas-Jasso, Jorge A., Montalvo-Arrieta, Juan C., Reinoso-Angulo, Eduardo
Publicada:
1 abr 2018
Categoría:
Geotechnical engineering and engineering geology
Resumen:
Landslides caused by a low magnitude earthquake swarm (2.8 <= M <= 3.6)
in 2012 were documented at the Santa Rosa Canyon in northeastern Mexico.
Disrupted landslides from falls and slides, in both rocks and soils,
were identified based on fieldwork and high-resolution satellite imagery
along stream banks from natural cliffs and along the road cut in the
epicentral area. Most of the landslides occurred on slopes greater than
40 degrees, where geological features played a key role in triggering
slope instabilities. The maximum distance limit for disrupted slides
from the epicentral area was 7 km. The area affected by landslides
during the early stage of the seismic sequence (July through August
2012) was 90 km(2). Landslide identification was limited in some areas
by the resolution of the satellite imagery and dense cloud coverage.
Both the epicentral distance and the area affected by landslides are
above the global bounds reported in literature. The final landslide
inventory is the first documented case of earthquake-induced landslides
in northeastern Mexico.
Filiaciones:
Salinas-Jasso, Jorge A.:
Univ Autonoma Nuevo Leon, Fac Ciencias Tierra, Ex Hacienda Guadalupe Km 8, Linares 67700, NL, Mexico
Montalvo-Arrieta, Juan C.:
Univ Autonoma Nuevo Leon, Fac Ciencias Tierra, Ex Hacienda Guadalupe Km 8, Linares 67700, NL, Mexico
Reinoso-Angulo, Eduardo:
Univ Nacl Autonoma Mexico, Inst Ingn, Ciudad Univ, Mexico City 04510, DF, Mexico
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