Article
Geochemistry & Geophysics
M. Higgins, P. C. La Femina, J. C. Weber, H. Geirsson, G. A. Ryan, C. Wauthier
Summary: The study combines GPS and InSAR data to characterize the interseismic behavior and strain partitioning along the Caribbean-South American transform plate boundary, finding locked and creeping faults distributed unevenly, with significant implications for seismic hazard and risk assessment.
Article
Geosciences, Multidisciplinary
Emmanuel Gabet
Summary: This study examines the formation of the Table Mountains in the Stanislaus River watershed in northern California. The findings refute the theory that the mountains were formed within a bedrock paleovalley, instead suggesting that the latite flowed through a channel cut into underlying Cenozoic deposits.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2022)
Article
Geology
Jonathan D. Paul
Summary: The study used a database of river basins in Africa to investigate the impact of uplift and erosion on landscape development. Results showed that eroded rock volume is a proxy for fluvial incision and strongly correlates with long-wavelength gravity anomalies across Africa, but not with mean precipitation. The study suggests that spatial variations in epeirogenic uplift govern landscape evolution across the continent.
Article
Geosciences, Multidisciplinary
Wes Hildreth, Judy Fierstein, Fred M. Phillips, Andy Calvert
Summary: The tectonic interpretation of the central Sierra Nevada remains controversial, with a study providing evidence for late Cenozoic uplift of the mountain range. By examining the Trachyandesite of Kennedy Table, researchers concluded that the uplift was not a result of continuous tilting, but a distinct event in the late Cenozoic. Using quantitative data, it was estimated that the uplift of the Sierran block was around 2,000 to 3,000 meters, confirming earlier assumptions.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2022)
Article
Geosciences, Multidisciplinary
F. Liu, J. R. Elliott, T. J. Craig, A. Hooper, T. J. Wright
Summary: InSAR time series analysis can better resolve coseismic displacement signals of earthquakes, improve the resolving power of InSAR for earthquake studies, and yield more robust earthquake modeling results.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geosciences, Multidisciplinary
Laura Rodriguez-Rodriguez, Francisco Jose Fernandez, Rosana Menendez-Duarte, Valery Guillou, Beatriz Puente-Berdasco, Vincent Rinterknecht
Summary: Dating of rock avalanche clusters in the Cantabrian Mountains provides valuable paleo-earthquake data. In this study, the ages of rock avalanche deposits were determined using the 36Cl Cosmic Ray Exposure dating technique, revealing multiple instability events with a recurrence interval of approximately 3.7 ka. The results indicate the potential for developing regional paleo-earthquake catalogs and improving our understanding of landscape evolution.
Article
Chemistry, Multidisciplinary
Weiling Zhu, Lin Ding, Yingfeng Ji, Rui Qu, Ye Zhu, Chaodi Xie, Deng Zeng
Summary: By constructing different dynamic models, this study reveals that the formation of the Himalayas is influenced by crustal thickening, slab break-off and upwelling asthenospheric flow. The uplift rate gradually slows down over time, counterbalanced by increased monsoon and surface erosion.
APPLIED SCIENCES-BASEL
(2022)
Article
Agriculture, Dairy & Animal Science
Alessandro Vetere, Michela Ablondi, Enrico Bigliardi, Matteo Rizzi, Francesco Di Ianni
Summary: This study investigated sex determination in Sierra Nevada lizards using cloacal probing and contrast radiography. Results showed that contrast radiography had higher sensitivity for sex determination compared to probing. This technique could be a valid and less invasive method for sexing young lizards.
Article
Multidisciplinary Sciences
Aurora A. Gutierrez, Stijn Hantson, Baird Langenbrunner, Bin Chen, Yufang Jin, Michael L. Goulden, James T. Randerson
Summary: The study shows that the likelihood of fire occurrence and burned area in the Sierra Nevada range increases nonlinearly with daily temperature during summer. A 1 degrees C increase in temperature leads to a 19 to 22% increase in fire risk and a 22 to 25% increase in burned area risk. Climate model projections suggest that by the 2040s, fire numbers will increase by 51 +/- 32% and burned area will increase by 59 +/- 33%, emphasizing the threat posed by hotter and drier summers to fire management.
Article
Geosciences, Multidisciplinary
L. N. J. Wedmore, J. Biggs, M. Floyd, A. Fagereng, H. Mdala, P. Chindandali, J. N. Williams, F. Mphepo
Summary: The study reveals that the San microplate, located south of the southwestern branch of the East African Rift, is statistically distinct from the Nubia tectonic plate with an extension rate of 0.4-0.7 mm/yr. Additionally, new GNSS measurements show that the extension rate across the southern Malawi Rift is 2.2 +/- 0.3 mm/yr, mostly concentrated over 890 km, despite the narrow surface expression of faulting. These geodetic measurements provide insight into the strain accommodation in broad zones within southern Africa's thick continental lithosphere.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geosciences, Multidisciplinary
J. Maurer, R. Dutta, A. Vernon, S. Vajedian
Summary: The 7.2 magnitude earthquake that occurred in Nippes, Haiti on August 14, 2021 ruptured multiple segments of the Enriquillo-Plantain Garden Fault Zone. The fault slip occurred on both sides of a restraining bend, resulting in reverse-slip and left-lateral slip. Afterslip also occurred at shallow depths in the vicinity of the coseismic rupture areas.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Environmental Studies
Jose Juan de Sanjose Blasco, Alan D. Atkinson, Manuel Sanchez-Fernandez, Antonio Gomez-Ortiz, Montserrat Salva-Catarineu, Ferran Salvador-Franch
Summary: This study monitored the Corral del Veleta rock glacier and found that it is in an accelerated process of immobilization with ongoing degradation of the relict glacial ice and permafrost. These changes are related to the changing high-mountain climate of Sierra Nevada, characterized by increasing temperatures, decreasing annual snowfall, and shorter duration of snow on the ground.
Article
Computer Science, Information Systems
Ziran Zhang, Steven Glaser, Thomas Watteyne, Sami Malek
Summary: Historically, mountain hydrology research has relied on observational data from infrequent manual measurements, but recent advancements in IoT technology have enabled real-time, cost-effective and dense data collection in this field.
IEEE INTERNET OF THINGS JOURNAL
(2022)
Article
Geosciences, Multidisciplinary
Mason Perry, Cyril Muller, Marino Protti, Lujia Feng, Emma M. Hill
Summary: Using continuous geodetic time series, five shallow slow slip events (SSEs) were identified offshore and beneath the Osa peninsula in southern Costa Rica. These events occur approximately every 4-5 years and may potentially limit the magnitude and spatial distribution of future large ruptures.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geochemistry & Geophysics
Yingfeng Zhang, Xinjian Shan, Wenyu Gong, Guohong Zhang
Summary: The paper quantitatively demonstrates the main reason for the ambiguous InSAR-based models and identifies that the key to differentiate between these models is to resolve the small asymmetry in surface deformation patterns. Research shows that it is impossible to uniquely determine the dip orientation of thrust earthquakes with M-w < 6.0 and depth > 5.0 km using InSAR data at typical noise levels in mountain belts.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Geochemistry & Geophysics
Lingyu Zhang, Kristoffer Szilas
Summary: This study presents new petrological and geochemical data for the Narssaq Ultramafic Body (NUB) in the Itsaq Gneiss Complex of SW Greenland. The results indicate that the ultramafic rocks of NUB are not mantle residues, but instead represent crustal cumulates derived from high-Mg magmas.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Rong Xu, Sarah Lambart, Oliver Nebel, Ming Li, Zhongjie Bai, Junbo Zhang, Ganglan Zhang, Jianfeng Gao, Hong Zhong, Yongsheng Liu
Summary: This study investigated the iron isotope compositions of Cenozoic basalts in Southeast China, finding significant variations related to different types of basalts and their respective sources.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
C. J. Ebinger, Miriam C. Reiss, Ian Bastow, Mary M. Karanja
Summary: The East African rift system is formed above mantle upwellings and the formation of rifts is related to lithospheric thinning and magmatic activity. The amount of splitting varies spatially and the fast axes are predominantly parallel to the orientation of the rifts. Thick lithospheric modules have less splitting and different orientations, which may indicate mantle plume flow. Splitting rotates and increases in strength as it enters the rift zones, suggesting that the anisotropy is mainly present at shallow depths.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Correction
Geochemistry & Geophysics
Ekaterina Rojas-Kolomiets, Owen Jensen, Michael Bizimis, Gene Yogodzinski, Lukas Ackerman
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Robert W. Nicklas, Igor S. Puchtel, Ethan F. Baxter
Summary: Oxygen fugacity is a fundamental parameter for understanding redox processes in igneous systems. This study compares the Fe-XANES oxybarometry method with the V-in-olivine method for evaluating fO(2) in MORB lavas. The results show that the V-in-olivine method is not applicable to samples with low MgO content, and that the majority of Archean komatiite sources have lower fO(2) than modern MORB.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Chunfei Chen, Stephen F. Foley, Sebastian Tappe, Huange Ren, Lanping Feng, Yongsheng Liu
Summary: The volatile components CO2 and H2O play a major role in mantle melting and heterogeneity. In this study, Ca isotopes were used to trace the lithological heterogeneity in alkaline magmatic rocks. The results revealed the presence of K-richterite and carbonate components as the source of alkaline magmas with low delta 44/40Ca values. These findings highlight the importance of Ca isotopes as a robust tracer of lithological variation caused by volatiles in the Earth's upper mantle.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Timothee Jautzy, Gilles Rixhon, Regis Braucher, Romain Delunel, Pierre G. Valla, Laurent Schmitt, Aster Team
Summary: Although the current approach to estimate catchment-wide denudation rates using only 10Be concentrations has made significant progress in geomorphology, this study argues for the inclusion of 26Al measurements and testing of steady-state assumptions in slow eroding, formerly glaciated landscapes. The study conducted measurements of both 10Be and 26Al in stream sediments from the Vosges Massif in France and found that elevation, slope, channel steepness, and precipitation were the primary factors controlling denudation rates. The study also revealed a significant relationship between the extent of past glaciation and the cosmogenic (un-)steadiness in the stream sediments.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Erik van der Wiel, Douwe J. J. van Hinsbergen, Cedric Thieulot, Wim Spakman
Summary: Numerical models of Earth's mantle dynamics can predict the vigour and mixing of mantle flow, and the average slab sinking rates are an unexplored parameter that can provide intrinsic information on these characteristics. Through numerical experiments, it has been found that slab sinking rates are strongly correlated with mantle convection and mixing, and may explain geochemical observations from hotspot volcanoes.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)