Results 11 to 20 of about 46 (41)
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 +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 +8 more
europepmc +2 more sources
Characterization of moderate ash-and-gas explosions at Santiaguito volcano, Guatemala, from infrasound waveform inversion and thermal infrared measurements. [PDF]
Geophys Res Lett, 2016 Abstract The rapid discharge of gas and rock fragments during volcanic eruptions generates acoustic infrasound. Here we present results from the inversion of infrasound signals associated with small and moderate gas‐and‐ash explosions at Santiaguito volcano, Guatemala, to retrieve the time history of mass eruption rate at the vent.
Angelis S +7 more
europepmc +2 more sources
Subseismic to Seismic Slip in Smectite Clay Nanofoliation. [PDF]
J Geophys Res Solid Earth, 2019 Abstract Smectite clays are the main constituent of slipping zones found in subduction zone faults at shallow depth (e.g., <1‐km depth in the Japan Trench) and in the decollements of large landslides (e.g., 1963 landslide, Vajont, Italy). Therefore, deformation processes in smectite clays may control the mechanical behavior from slow creep to fast ...
Aretusini S +3 more
europepmc +2 more sources
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 +4 more
wiley +1 more source
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 +4 more
wiley +1 more source
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 +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 +8 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 +3 more
wiley +1 more source
Journal of Geophysical Research: Solid Earth, Volume 124, Issue 10, Page 10107-10131, October 2019., 2019 Abstract Gas‐and‐ash explosions at the Santiaguito dome complex, Guatemala, commonly occur through arcuate fractures, following a 5‐ to 6‐min period of inflation observed in long‐period seismic signals. Observation of active faults across the dome suggests a strong shear component, but as fault propagation generally proceeds through the coalescence of ...
Adrian J. Hornby +7 more
wiley +1 more source