Statewide California Earthquake Center

A standardized field framework for integrated microbiological and geochemical sampling of deeply-sourced seeps across large-scale geological gradients

Accessing the deep subsurface biosphere remains a major challenge in Earth and planetary sciences. Drilling provides direct access but is costly, spatially restricted, and difficult to deploy at the scales required to investigate interactions between geological processes and micr...

A Causal Examination of the Solar Influence on Holocene Climate

Abstract Variations in Total Solar Irradiance (TSI) have long been hypothesized to influence global mean surface temperature (GMST) on multidecadal to millennial timescales, but empirical evidence has remained elusive. Here, we explore the link between solar variability and clima...

Efficient Physics-Informed Ground-Motion Simulations with Reduced-Order Models: CyberShake Implications and High-Resolution Site Terms for Southern San Andreas Fault Earthquakes

ABSTRACT Recent advances in Probabilistic Seismic Hazard Analysis (PSHA) leverage physics-based ground-motion simulations to estimate seismic hazard, such as the CyberShake project. However, computational costs quickly escalate when performing PSHA for numerous faults or sites an...

The impact of NaOH, CaO, and [Ca 2+ ] + [HCO 3 − ] additions on PIC and POC formation in Los Angeles Harbor Waters

Abstract. Negative CO2 emission technologies such as ocean alkalinity enhancement, in tandem with emissions reduction are necessary to keep the climate system below a critical tipping point. While the biogeochemical consequences of alkalinity enhancement remain poorly constrained...

Forest canopy decline under elevated CO 2 during the Paleocene-Eocene Thermal Maximum

Uncertainty remains regarding the impact of rapid anthropogenic warming on forest ecosystem structure, biodiversity, and function. As an analog, we reconstruct forest canopy density and compositional change in Wyoming, USA, through the Paleocene-Eocene Thermal Maximum (PETM), an...