Results 11 to 20 of about 287 (147)

A comparison of seasonal rainfall forecasts over Central America using dynamic and hybrid approaches from Copernicus Climate Change Service seasonal forecasting system and the North American Multimodel Ensemble. [PDF]

Int J Climatol, 2023
Dynamic, statistical, and hybrid approaches can be used to forecast seasonal rainfall. We compare approaches by evaluating how dynamic and hybrid forecasts from C3S and NMME perform relative to statistical predictions over Central America during key wet season months. Results reveal high forecast skill over the North Pacific and relatively low skill in
Kowal KM, Slater LJ, García López A, Van Loon AF.   +3 more
europepmc   +2 more sources

Structural Evolution of a Crustal-Scale Seismogenic Fault in a Magmatic Arc: The Bolfin Fault Zone (Atacama Fault System). [PDF]

Tectonics, 2021
Abstract How major crustal‐scale seismogenic faults nucleate and evolve in crystalline basements represents a long‐standing, but poorly understood, issue in structural geology and fault mechanics. Here, we address the spatio‐temporal evolution of the Bolfin Fault Zone (BFZ), a >40‐km‐long exhumed seismogenic splay fault of the 1000‐km‐long strike‐slip ...
Masoch S, Gomila R, Fondriest M, Jensen E, Mitchell T, Pennacchioni G, Cembrano J, Cembrano J, Di Toro G.   +8 more
europepmc   +2 more sources

Joint Inversion of Geodetic and Strong Motion Data for the 2012, Mw 6.1–6.0, May 20th and May 29th, Northern Italy Earthquakes: Source Models and Seismotectonic Interpretation

Journal of Geophysical Research: Solid Earth, Volume 128, Issue 5, May 2023., 2023
Abstract We present the first rupture models of the two mainshocks of the 2012 northern Italy sequence, determined by jointly inverting seismic and geodetic data. We aim at providing new insights into the mainshocks for which contrasting seismotectonic interpretations are proposed in literature. Sources' geometric parameters were constrained by seismic
L. Improta, A. Cirella, G. Pezzo, I. Molinari, A. Piatanesi   +4 more
wiley   +1 more source

Deposit‐Derived Block‐and‐Ash Flows: The Hazard Posed by Perched Temporary Tephra Accumulations on Volcanoes; 2018 Fuego Disaster, Guatemala

Journal of Geophysical Research: Solid Earth, Volume 127, Issue 6, June 2022., 2022
Abstract The impact of hazardous pyroclastic density currents (PDCs) increases with runout distance, which is strongly influenced by the mass flux. This article shows that the mass flux of a PDC may derive not only from vent discharge during the eruption, but also from partly hot, temporary stores (accumulations) of aerated pyroclastic material perched
Gilda Risica, Mauro Rosi, Marco Pistolesi, Fabio Speranza, Michael J. Branney   +4 more
wiley   +1 more source

Pre‐ and Co‐Eruptive Analysis of the September 2021 Eruption at Cumbre Vieja Volcano (La Palma, Canary Islands) Through DInSAR Measurements and Analytical Modeling

Geophysical Research Letters, Volume 49, Issue 7, 16 April 2022., 2022
Abstract We investigate the 19 September 2021 eruption of the Cumbre Vieja volcano (La Palma, Canary Islands, Spain). In particular, we analyze the Differential Interferometric Synthetic Aperture Radar (DInSAR) measurements obtained by processing Sentinel‐1 images acquired from both ascending and descending orbits.
C. De Luca, E. Valerio, F. Giudicepietro, G. Macedonio, F. Casu, R. Lanari   +5 more
wiley   +1 more source

Temperature and barometric pressure affect the activity intensity and movement of an endangered thermoconforming lizard

Ecosphere, Volume 13, Issue 3, March 2022., 2022
Abstract Global warming is expected to affect movement‐related thermoregulation in ectotherms, but the likely effects on thermoconforming lizards, which spend little energy in thermoregulation behavior, are unclear. We used the Guatemalan beaded lizard (Heloderma charlesbogerti) as a model thermoconforming species to investigate the effects of ambient ...
Daniel Ariano‐Sánchez, Rasmus M. Mortensen, Rory P. Wilson, Peder Bjureke, Stefanie Reinhardt, Frank Rosell   +5 more
wiley   +1 more source

Analyzing Explosive Volcanic Deposits From Satellite‐Based Radar Backscatter, Volcán de Fuego, 2018

Journal of Geophysical Research: Solid Earth, Volume 126, Issue 9, September 2021., 2021
Abstract Satellite radar backscatter has the potential to provide useful information about the progression of volcanic eruptions when optical, ground‐based, or radar phase‐based measurements are limited. However, backscatter changes are complex and challenging to interpret: explosive deposits produce different signals depending on pre‐existing ground ...
E. W. Dualeh, S. K. Ebmeier, T. J. Wright, F. Albino, A. Naismith, J. Biggs, P. A. Ordoñez, R. M. Boogher, A. Roca   +8 more
wiley   +1 more source

Moho Depth of Northern Baja California, Mexico, From Teleseismic Receiver Functions

Earth and Space Science, Volume 8, Issue 6, June 2021., 2021
Abstract We estimated Moho depths from data recorded by permanent and temporary broadband seismic stations deployed in northern Baja California, Mexico, using the receiver function technique. This region is composed of two subregions of contrasting geological and topographical characteristics: the Peninsular Ranges of Baja California (PRBC), a ...
E. E. Ramírez, Klaus Bataille, J. A. Vidal‐Villegas, J. M. Stock, J. Ramírez‐Hernández   +4 more
wiley   +1 more source

Thermal Weakening Friction During Seismic Slip: Experiments and Models With Heat Sources and Sinks

Journal of Geophysical Research: Solid Earth, Volume 126, Issue 5, May 2021., 2021
Abstract Experiments that systematically explore rock friction under crustal earthquake conditions reveal that faults undergo abrupt dynamic weakening. Processes related to heating and weakening of fault surfaces have been invoked to explain pronounced velocity weakening.
S. Nielsen, E. Spagnuolo, M. Violay, G. Di Toro   +3 more
wiley   +1 more source

Source parameters of the Orizaba earthquake of august 28, 1973

Geofísica Internacional, 1976
Se resume la teoría y la metodología con las cuales se pueden estimar parámetros focales de un temblor a partir de señales sísmicas. Se promedian 11 espectros de onda P (usando registros de corto y largos periodos por cada estación) y se combina con 11 ...
Singh Singh Shri Krishna, M. Wyss
doaj   +1 more source