Results 1 to 10 of about 572,960 (261)

Rupture Directivity of the 25 October 2022 M_w 5.1 Alum Rock Earthquake

open access: yesThe Seismic Record, 2023
The 25 October 2022 M_w 5.1 Alum Rock earthquake shows strong evidence for southeast rupture directivity along the central Calaveras fault (CCF), as indicated by observed ground motions and simulated kinematic ruptures.
Evan Hirakawa   +3 more
doaj   +1 more source

SEALPOX FIELD SURVEY [PDF]

open access: yesJournal of Wildlife Diseases, 1972
The light microscopic demonstration of eosinophilic intracytoplasmic inclusion bodies in epithelial cells and the electron microscopic demonstration of poxvirus in these inclusions has shown that sealpox occurs in free-living California sea lions, Zalophus calijornianus.
T M, Wilson, A D, Boothe, N F, Cheville
openaire   +2 more sources

Commentary: The Role of Geodetic Algorithms for Earthquake Early Warning in Cascadia

open access: yesGeophysical Research Letters, 2021
The ShakeAlert earthquake early warning (EEW) system issues public alerts in California and will soon extend to Oregon and Washington. The Cascadia subduction zone presents significant new challenges and opportunities for EEW.
Jeffrey J. McGuire   +3 more
doaj   +1 more source

Three‐Dimensional Electrical Resistivity Characterization of Mountain Pass, California and Surrounding Region

open access: yesGeochemistry, Geophysics, Geosystems, 2021
The Sulphide Queen carbonatite deposit at Mountain Pass in southeast California is a world class rare earth element (REE) resource. This study images electrical resistivity structure of the REE deposit and surrounding area to characterize resources under
J. R. Peacock, K. M. Denton, D. A. Ponce
doaj   +1 more source

Evidence of Active Quaternary Deformation on the Great Valley Fault System near Winters, Northern California

open access: yesThe Seismic Record, 2022
The Great Valley fault system defines the tectonic boundary between the Coast Ranges and the Central Valley in California, is active throughout the Quaternary, and has been the source of several significant (M > 6) historic earthquakes, including the ...
Charles C. Trexler   +4 more
doaj   +1 more source

Waterfowl recently infected with low pathogenic avian influenza exhibit reduced local movement and delayed migration

open access: yesEcosphere, 2023
Understanding relationships between infection and wildlife movement patterns is important for predicting pathogen spread, especially for multispecies pathogens and those that can spread to humans and domestic animals, such as avian influenza viruses ...
Claire S. Teitelbaum   +10 more
doaj   +1 more source

Resilience of riparian vegetation productivity to early 21st century drought in northern California, USA

open access: yesEcosphere, 2023
Drought and intensive land use can interact as stressors on riparian vegetation, especially along rivers flowing through seasonally dry landscapes. Knowledge of past riparian vegetation response to drought and land use change can provide land managers ...
Paul C. Selmants   +3 more
doaj   +1 more source

How Low Should We Alert? Quantifying Intensity Threshold Alerting Strategies for Earthquake Early Warning in the United States

open access: yesEarth's Future, 2022
We use a suite of historical earthquakes to quantitatively determine earthquake early warning (EEW) alert threshold strategies for a range of shaking intensity targets for EEW along the United States West Coast.
Jessie K. Saunders   +2 more
doaj   +1 more source

Earthquakes in the Shadows: Why Aftershocks Occur at Surprising Locations

open access: yesThe Seismic Record, 2022
For decades there has been a debate about the relative effects of dynamic versus static stress triggering of aftershocks. According to the static Coulomb stress change hypothesis, aftershocks should not occur in stress shadows—regions where static ...
Jeanne L. Hardebeck, Ruth A. Harris
doaj   +1 more source

Avian eggshell thickness in relation to egg morphometrics, embryonic development, and mercury contamination

open access: yesEcology and Evolution, 2020
Eggshell thickness is important for physiological, ecological, and ecotoxicological studies on birds; however, empirical eggshell thickness measurements for many species and regions are limited.
Sarah H. Peterson   +5 more
doaj   +1 more source

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