Seismic hazard assessment for Guatemala City

Villagrán, M.; Lindholm, Conrad; Dahle, A.; Cowan, Hugh; Bungum, Hilmar

doi:10.1007/bf00128266

Cited by 7 publications

(2 citation statements)

References 13 publications

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“…The proposed tectonic segment boundaries of Stoiber and Carr (1973), thought to be tears in the down-going slab, are also shown. Villagrán et al (1997) also suggested a segmentation boundary south of the Guatemala-El Salvador border. Figure 7B shows rupture lengths of the historical earthquakes versus time, and one can see that the April 1902 and 1915 earthquakes clearly ruptured across the San Jose Canyon and three of the proposed segment boundaries.…”

Section: Rupture Areas and Relationship To Tectonic Featuresmentioning

confidence: 94%

Seismic history of the Middle America subduction zone along El Salvador, Guatemala, and Chiapas, Mexico: 1526–2000

White

Ligorría²,

Cifuentes³

2004

Natural Hazards in El Salvador

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We present a catalog of subduction zone earthquakes along the Pacifi c coast from central El Salvador to eastern Chiapas, Mexico, from 1526 to 2000. We estimate that the catalog is complete since 1690 for M S ≥ 7.4 thrust events and M ≥ 7.4 normal-faulting events within the upper 60 km of the down-going slab. New intensity maps were constructed for the 27 earthquakes since 1690, using mostly primary data sources. By calibrating with recent events we fi nd that the long axis of the (MM) VII intensity contour for such large earthquakes well approximates the length and location of rupture along the subduction zone and can thus be used to estimate the locations and magnitudes of older events.The section from western El Salvador to Chiapas appears to have ruptured completely in a series of four to fi ve earthquakes during each of the periods 1902-1915, 1743-1776, and possibly 1565-1577. Earthquakes of M W 7.75 ± 0.3 have caused major damage along the 200 km long section from San Salvador to Guatemala City every 71 ± 17 yr, apparently since at least 1575. Although the January 2001 El Salvador earthquake caused damage within part of this zone, no major thrust earthquake has occurred there since at least 1915. We fi nd that much of this section has been relatively quiescent for moderate earthquakes shallower that 50 km since at least 1963. The conditional probability that an earthquake of M W 7.75 ± 0.3 will occur at this location in the next 20 yr is estimated at 50% (±30%).

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Section: Rupture Areas and Relationship To Tectonic Featuresmentioning

confidence: 94%

Seismic history of the Middle America subduction zone along El Salvador, Guatemala, and Chiapas, Mexico: 1526–2000

White

Ligorría²,

Cifuentes³

2004

Natural Hazards in El Salvador

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“…Santiago de Guatemala (Antigua Guatemala; MacLeod, 2010) was founded in 1543, after a strong mudflow from Agua volcano in September 1541 destroyed the previous capital, today known as Ciudad Vieja (Hutchison et al, 2014). Santiago became the most important city in Central America (Lutz, 1997) and after 1773, following an earthquake of an inferred magnitude of 7.5 (Villagran et al, 1996) that destroyed 20 most of the city, the capital was relocated again, this time to the Valley of the Ermita, and named Nueva Guatemala de la Asunción (today Guatemala City).…”

mentioning

confidence: 99%

300-years of hydrological records and societal responses to droughts and floods on the Pacific coast of Central America

Guevara-Murua¹,

Williams²,

Hendy³

et al. 2017

Preprint

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Abstract. The management of hydrological extremes and impacts on society is inadequately understood because of the combination of short-term hydrological records, an equally short-term assessment of societal responses and the complex multi-directional relationships between the two over longer timescales. Rainfall seasonality and interannual variability on the Pacific coast of Central America is high due to the passage of the Inter Tropical Convergence Zone (ITCZ) and large-scale 5 phenomena El Niño Southern Oscillation (ENSO). Here we reconstruct hydrological variability and the associated impacts drawing on documentary sources from the cities of Santiago de Guatemala (now Antigua Guatemala) and Guatemala de la Clim. Past Discuss.,

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Strong ground-motion prediction and uncertainties estimation for Delhi, India

Joshi

Sharma

2011

Nat Hazards

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An endeavour has been made in the present study to estimate the uncertainties in strong ground-motion estimation for Delhi region. The strong ground motion (SGM) has been estimated using the logic-tree approach with equal weights chosen for the branches of the logic tree because a scientific preference has not yet been developed for the area. Coefficient of variation (COV) maps have been generated along with the mean SGM which aid in visualizing the effect of our lack of knowledge on the final results and highlight those areas where improved scientific understanding can have an impact on future hazard maps. Monte Carlo simulation has been sued to consider the effect of the variation in the seismic hazard parameters. The spectral ground generated for various return periods suggests higher values in the north-west region with a decreasing trend towards the south-east part of Delhi. The hazard gradient is highest at spectral acceleration (Sa) 0.1 s and lowest at spectral acceleration (Sa) 1.0 s for all return periods. The highest COV values (*0.60) were observed in case of PGA while lowest COV values (*0.15) were observed for spectral acceleration (Sa) 0.3 s at all return periods. One of the conspicuous observations is that the trends of COV maps have been found to be governed by the boundaries of the seismogenic sources. While COV values are governed mostly by Line Sources in smaller return and time periods, in higher return periods trend of the COV maps were found to be governed by the boundaries of the Areal Sources.

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Seismic hazard assessment for Guatemala City

Cited by 7 publications

References 13 publications

Seismic history of the Middle America subduction zone along El Salvador, Guatemala, and Chiapas, Mexico: 1526–2000

Seismic history of the Middle America subduction zone along El Salvador, Guatemala, and Chiapas, Mexico: 1526–2000

300-years of hydrological records and societal responses to droughts and floods on the Pacific coast of Central America

Strong ground-motion prediction and uncertainties estimation for Delhi, India

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