Explanipedia

Hayward Fault Creep From Coda Wave Interferometry Open

Thomas Luckie, Robert Choens · 2025

Understanding creep is essential for assessing seismic hazards along the creeping Hayward Fault, which threatens the San Francisco area. Current 1‐D monitoring methods, like creepmeters and theodolites, provide limited measurements with lo…

Permeability scaling relationships of volcanic tuff from core to field scale measurements Open

Dolan Lucero, Suzanne Bourret, John P. Ortiz, Bradley G. Fritz, Miles Bodmer , et al. · 2025

A recent chemical explosive test in P-Tunnel at the Nevada National Security Site, Nevada, USA, was conducted to better understand how signals propagate from explosions in the subsurface. A primary signal of interest is the migration of ga…

Thermophysical properties of the Ghareb formation relevant for nuclear waste disposal Open

William Kibikas, Ahmad Ghassemi, Robert Choens, Stephen J. Bauer, Eyal Shalev , et al. · 2025

The Ghareb formation, a shallowly buried porous chalk in Israel, is currently a candidate for nuclear waste disposal. The potential repository is somewhat unique for its host rock and emplacement in shallow (500 m) engineered large diamete…

Sensitivity studies on erosion criteria for the Arctic Coastal Erosion (ACE) Model Open

Elyce Bayat, Diana Bull, Jennifer Frederick, Alejandro Mota, Irina Tezaur , et al. · 2024

Brine Availability Test in Salt (BATS) FY24 Update Open

Kristopher Kuhlman, Melissa Mills, Richard Jayne, Edward Matteo, Courtney Herrick , et al. · 2024

This report summarizes fiscal year 2024 (FY24) activities centered around a series of field tests in bedded salt at the Waste Isolation Pilot Plant (WIPP) funded by the Office of Spent Fuel and Waste Science and Technology in the Spent Fue…

LYNM-PE1 Seismic Parameters from Borehole Log, Laboratory, and Tabletop Measurements Open

J. F. Wilson, Miles Bodmer, Margaret Townsend, Robert Choens, Tara Bartlett , et al. · 2024

The goal of this work is to provide a database of quality-checked seismic parameters that can be integrated with the Geologic Framework Model (GFM) for the LYNM-PE1 (Low Yield Nuclear Monitoring – Physical Experiment 1) testbed. We integra…

LYNM PE1 Pre-Experiment A Site Characterization Report Open

Miles Bodmer, Margaret Townsend, Barry Roberts, J. F. Wilson, Justin Reppart , et al. · 2024

Underground chemical explosive experiments such as LYNM PE1 generate large multiphenomenological datasets, require complex site preparation and build out, and utilize cutting edge models and analysis techniques to analyze and simulate the …

Geomechanical Behavior of the Ghareb Formatio Open

William Kibikas, Robert Choens, Eyal Shalev, Vladimir Lyakhovsky, Michael Homel · 2024

Summary of the Brine Availability Test in Salt (BATS), Including Extended Plan for Experiments at the Waste Isolation Pilot Plant (WIPP) Open

Kristopher Kuhlman, Melissa Mills, Robert Choens, Courtney Herrick, Shawn Otto , et al. · 2024

This document lays out a set of near-future investigations in salt, the third phase of BATS (BATS 3). This phase is planned to answer the few remaining issues from the first two phases of BATS (BATS 1 and BATS 2), and to prepare for a subs…

Brine Availability Test in Salt (BATS) Heater Test at WIPP - First Phase Results and Update - 23358. Open

Kristopher Kuhlman, Melissa Mills, Philip H. Stauffer, Jonny Rutqvist, Robert Choens , et al. · 2023

Predicting the Occurrence of Mixed Mode Failure during Hydraulic Fracturing. Open

Robert Choens · 2023

Water-Weakening and Time-Dependent Deformation of Organic-Rich Chalks Open

William Kibikas, Robert Choens, Stephen J. Bauer, Eyal Shalev, Vladimir Lyakhovsky · 2023

Effect of Printing Orientation on Geomechanical and Geophysical Properties of Gypsum-Based 3D Printed Geomaterials Open

Jamey Jones, Robert Choens, Hongkyu Yoon · 2023

Development of the Arctic Coastal Erosion Model with a Demonstration at Drew Point, AK Open

Jennifer Frederick, Diana Bull, Alejandro Mota, Irina Tezaur, Benjamin Jones , et al. · 2023

Triaxial Shear Tests on Simulated Sierra White Fault Gouge & Borehole Simulation in Sierra White Gouge Open

Robert Choens, Hongkyu Yoon · 2023

Laboratory shear tests were conducted on pulverized Sierra White granite (SWG) to investigate slip mechanisms in naturally occurring faults. Synthetic fault geometries were constructed by sandwiching fine grained SWG powder in between stee…

Demonstration of the ACE (Arctic Coastal Erosion) model at Drew Point, AK during a permafrost bluff block collapse event in summer 2018. Open

Jennifer Frederick, Diana Bull, Alejandro Mota, Irina Tezaur, Benjamin Jones , et al. · 2022

Geomechanical and geophysical properties of gypsum-based 3D printed geomaterials. Open

Hongkyu Yoon, Michelle S. Williams, Liyang Jiang, Robert Choens, Antonio Bobet , et al. · 2022

Impact of thermo-mechanical properties on deformation behavior of potential host rock for nuclear waste disposal . Open

William Kibikas, Robert Choens, Stephen J. Bauer, Eyal Shalev, Vladimir Lyakhovsky · 2022

Surface chemistry controls on crack growth in plagioclase feldspars. Open

Robert Choens, Anastasia Ilgen · 2022

Borehole stability in the Ghareb formation. Open

Stephen J. Bauer, Robert Choens, William Kibikas, Jennifer L. Wilson, Michel A. Homel , et al. · 2022

Borehole Stability in the Ghareb Formation. Open

William Kibikas, Robert Choens, Jennifer L. Wilson, Michael Homel, Sofiane Achour , et al. · 2022

Acoustic Emission Monitoring of Thermal Cycling in Salt at the Waste Isolation Pilot Plant Open

Robert Choens, Kristopher Kuhlman, Courtney Herrick, Shawn Otto · 2022

A series of field-based multi-physics observations were conducted as part of the Brine Availability Test in Salt (BATS) underground at the Waste Isolation Pilot Plant (WIPP), near Carlsbad, NM. Observations were made of brine production, t…

Acoustic Emission Monitoring of Thermal Cycling in Salt at the Waste Isolation Pilot Plant. Open

Robert Choens, Kristopher Kuhlman, Courtney Herrick, Shawn Otto · 2022

Thermal-hydrological-mechanical characterization of the Ghareb formation at conditions of high-level nuclear waste disposal. Open

William Kibikas, Stephen J. Bauer, Robert Choens, Eyal Shalev, Vladimir Lyakhovsky · 2022

Coupled poro-elasto-plasticity of geomaterials: Simulation and validation. Open

Maria Warren, James Bean, Robert Choens, M. Martı́nez, Alec Kucala , et al. · 2022

Mechanical and hydrologic characterization of the Ghareb formation to support high level nuclear waste disposal. Open

William Kibikas, Stephen J. Bauer, Robert Choens, Eyal Shalev, Vladimir Lyakhovsky · 2021

WM1: Borehole Mechanical Stability. Open

Stephen J. Bauer, Robert Choens, V. Lyakhovsky, Michel A Homel, T. Antoun , et al. · 2021

Strengthening of Calcite Assemblages Through Chemical Complexation Reactions Open

Robert Choens, Jennifer E. Wilson, Anastasia Ilgen · 2021

Utilization of subsurface reservoirs, including fluid extraction/injection, can induce stress changes and modify in‐situ chemical equilibrium causing subcritical fracturing and deformation. Here, we show that chemical complexation reaction…

Demonstration of the ACE (Arctic Coastal Erosion) model at Drew Point, AK during a permafrost bluff block collapse event in summer 2018. Open

Jennifer Frederick, William Eymold, Alejandro Mota, Irina Tezaur, Benjamin Jones , et al. · 2021

Isotopic fractionation as in-situ sensor of subsurface reactive flow and precursor for rock failure Open

Anastasia Ilgen, Robert Choens, Andrew W. Knight, Jacob Harvey, Mario Iglesias Martínez , et al. · 2021

Greater utilization of subsurface reservoirs perturbs in-situ chemical-mechanical conditions with wide ranging consequences from decreased performance to project failure. Understanding the chemical precursors to rock deformation is critica…

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