Artículos Científicos
En esta sección podrás encontrar las publicaciones más recientes que han derivado del trabajo que se realiza en el Laboratorio de Paleosismología y Tsunamis
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Reconstructing Holocene seismic and tsunami history along the Rio Grande coast, Oaxaca, Mexico
This study aims to identify past earthquakes and tsunamis in the Oaxaca region of Mexico, a segment of the subduction zone between the Cocos and North American plates. We reconstructed paleoelevations from the sedimentary record using diatom-based transfer functions to identify co-seismic, post-seismic, inter-seismic, and permanent deformation associated with land-level changes. To achieve this, we developed a paleoelevation model using modern diatoms.
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Diatom-based palaeoenvironmental reconstruction of a coastal tropical estuary at the Rio Grande river mouth, Oaxaca, Mexico
A paleoenvironmental reconstruction of the coastal zone of Rio Grande, Oaxaca, Mexico, was conducted using fossil diatom assemblages from the core GSL329 and modern diatom taxa from surface samples. The semiquantitative analysis was applied to estimate past salinity conditions. The dominant diatoms in the GSL329 samples were Ulnaria sinensis and Nitzschia sigmoidea, which are indicative of freshwater and brackish-freshwater environments, respectively. Four distinct paleoenvironmental zones were identified: Zone 1 (the oldest - 811–751 cal BC) was characterized by a beach environment, predominant marine species such as Tabularia fasciculata...
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Geomorphic and paleoseismic evidence for active faulting along La Venta Fault, Guerrero, Mexican subduction Forearc
Understanding the potential earthquake activity of unknown active faults is crucial for assessing seismic hazards in subduction forearcs. Despite advancements, our knowledge of earthquakes on crustal faults away from plate boundaries, particularly in forearcs, remains incomplete. This study addresses this gap by utilizing paleoseismic records, cond...
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Hurricane Otis: Category 5 storm effects and cascading hazards in Acapulco Bay, Mexico
Hurricane Otis, a Category 5 storm, made landfall in Acapulco, Mexico, on October 25, 2023, with sustained winds of 270 km/h and wind gusts up to 330 km/h. Its unprecedented rapid intensification, attributed to recordhigh sea surface temperatures, marked it as the strongest storm to hit the region in the satellite era. This study documents the geomorphic, infrastructural, and socio-political impacts of the event, highlighting extensive coastal erosion, sediment deposition, and cascading hazards such as landslides and flooding...
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A global database of tsunami deposits
Geomorphic environments play a crucial role in influencing the preservation and characteristics of tsunami deposits. This paper introduces a global database of tsunami deposits, encompassing information on deposit locations, thematic data such as geomorphic environments and proxies and bibliographic details. Additionally, the database features maps...
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Tsunami deposits in tropical regions: A review
Tsunami deposits provide evidence of historical and prehistorical events. However, their preservation in tropical regions is generally poor. The reasons behind this poor preservation are often linked to a number of environmental and anthropogenic factors. This study is focused on analyzing the environmental factors that impact the preservation and...Tsunami deposits provide evidence of historical and prehistorical events. However, their preservation in tropical regions is generally poor. The reasons behind this poor preservation are often linked to a number of environmental and anthropogenic factors. This study is focused on analyzing the environmental factors that impact the preservation and...
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Tsunami deposits highlight high-magnitude earthquake potential in the Guerrero seismic gap Mexico
Globally, the largest tsunamigenic earthquakes have occurred along subduction zones. Devastating events exceeding magnitude 9, such as those in Chile, Sumatra, and Japan, struck in regions lacking instrumental records of similar events. Despite the absence of such events along the 1000-kilometer-long Mexican subduction zone, historical and geologic...
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Tsunami deposits database - Tropical and other climatic zones - Mendeley Data
The database contains information on the global distribution of historical and prehistorical tsunami deposits, categorized into two groups based on their location: the Tropical Zone and other climatic zones. It includes geographical coordinates, bibliographic references, year of publication, location by region and country, geomorphic environments w...
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Do slow slip earthquakes inhibit catastrophes? Geologic evidence from the Guerrero segment, Mexican subduction zone.
Globally, the largest tsunamigenic earthquakes have occurred along subduction zones. The Mw>9 devasting events in Chile, Sumatra, and Japan struck in areas where no instrumental records reported similar events. The one-thousand kilometer-long Mexican subduction zone (MSZ), where the Rivera-Cocos plates subduct under the North American plate, has no...
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Procedures for diatom analyses and hydrodynamic separation of extreme wave paleo-deposits from tropical sediment environments
Diatoms are an important proxy in tsunami and storm research studies to determine potential sediment source and changes in environments pre- and post-event. However, the use of this proxy has proven challenging when studying extreme wave paleo events in sediments from the humid tropics because of the scarcity of diatoms in sand beds, and in clay or silt beds above and below....
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Tsunami Effects on the Coast of Mexico by the Hunga Tonga-Hunga Ha’apai Volcano Eruption, Tonga
The massive explosion by the January 15, 2022 Hunga Tonga-Hunga Ha'apai volcano in Tonga triggered a trans-oceanic tsunami generated by coupled ocean and atmospheric shock waves during the explosion. The tsunami reached first the coast of Tonga, and later many coasts around the world....
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The importance of input data on landslide susceptibility mapping
Landslide detection and susceptibility mapping are crucial in risk management and urban planning. Constant advance in digital elevation models accuracy and availability, the prospect of automatic landslide detection, together with variable processing techniques, stress the need to assess the effect of differences in input data on the landslide....
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Spatial Variations of Tectonic Uplift - Subducting Plate Effects on the Guerrero Forearc, Mexico
Uplift is the predominant factor controlling fluvial systems in tectonically deforming regions. Mountains along subduction zones force incision, aggradation, or sinuosity modifications, showing differential uplift and variations in erosion rates, in river incision, and in channel gradient produced by ongoing tectonic deformation....
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The 23 June 2020 Mw 7.4 La Crucecita, Oaxaca, Mexico Earthquake and Tsunami: A Rapid Response Field Survey during COVID‐19 Crisis
The 23 June 2020 La Crucecita earthquake occurred at 10:29 hr on the coast of Oaxaca in an Mw 7.4 megathrust event at 22.6 km depth and triggered a tsunami recorded at tide gauge stations and a Deep-ocean Assessment and Reporting of Tsunamis off the coast of Mexico. Immediately after the earthquake, a rapid response effort was coordinated by member...
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Sand deposits reveal great earthquakes and tsunamis at Mexican Pacific Coast
Globally, instrumentally based assessments of tsunamigenic potential of subduction zones have underestimated the magnitude and frequency of great events because of their short time record. Historical and sediment records of large earthquakes and tsunamis have expanded the temporal data and estimated size of these events. Instrumental records sugges...