Results 61 to 70 of about 7,852 (221)

Impacts of Transient Critical Zone Evolution on Landslide Susceptibility and Hazard Across the Utuado Batholith, Puerto Rico

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 9, September 2026.
Abstract Landscapes in humid climates often experience rapid chemical and mechanical weathering that can change groundwater fluxes, drainage pathways, and frictional strength via alterations in subsurface mineral composition and matrix porosity. These changes to hillslope critical zone structure and strength should control landslide susceptibility ...
Jonathan P. Perkins, Mong‐Han Huang, Corina Cerovski‐Darriau, William Schulz, Collin Cronkite‐Ratcliff, Kelli Baxstrom, Mason Einbund, Jane Willenbring, Ben Leshchinsky, Samuel Johnstone   +9 more
wiley   +1 more source

Cone Penetrometer Off-Surface Sensor [PDF]

, 1999
Cone penetrometer technology accounts for approximately 50 percent of the subsurface drilling done at the Savannah River Site. This technology provides a means of collecting data for use in the characterization of the subsurface.
Huffman, R. K., Hebert, P. S., Smail, T. R., French, P. J.   +3 more
core  

Capability of Pocket Penetrometer to Evaluate Unconfined Compressive Strength of Baghdad Clayey Soil

مجلة النهرين للعلوم الهندسية, 2018
Unconfined compressive strength represents an important parameter for soil investigation report test results because the values of cohesion and allowable bearing capacity can directly obtained from the relevant test especially if the clayey soil layers ...
Azhar Sadiq Yasun
doaj   +1 more source

Surface‐State Controls on Dust Emission Variability in Lower Mesopotamia and Kuwait Using Field and Multi‐High‐Resolution Satellite Data

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 9, September 2026.
Abstract Aeolian dust strongly influences climate, air quality, and biogeochemical cycles, yet identifying source areas and determining their surface‐state controls remain challenging. We focus on lower Mesopotamia and Kuwait, a globally significant dust source region where surface characteristics of dust sources remain poorly understood through ...
Jasem A. Albanai, Giles F. S. Wiggs, Ali Al‐Hemoud, David S. G. Thomas   +3 more
wiley   +1 more source

Portable penetrometer for agricultural soil: sensitivity test to identify critical compaction depth

Revista Brasileira de Ciência do Solo, 2010
To express the negative effects of soil compaction, some researchers use critical values for soil mechanical strength that severely impair plant growth. The aim of this study was to identify this critical compaction depth, to test the functionality of a ...
João Carlos Medeiros, Getulio Coutinho Figueiredo, Álvaro Luiz Mafra   +2 more
doaj   +1 more source

The Motion Decoupled Delivery System: A New Deployment System for Downhole Tools is Tested at the New Jersey Margin [PDF]

Scientific Drilling, 2013
The Motion Decoupled Hydraulic Delivery System (MDHDS) is a new downhole tool delivery system that is deployed by wireline and uses drillstring pressure to advance a penetrometer (or other downhole tool) into the formation at the bottom of offshore ...
P. B. Flemings, P. J. Polito, T. L. Pettigrew, G. J. Iturrino, E. Meissner, R. Aduddell, D. L. Brooks, C. Hetmaniak, D. Huey, J. T. Germaine, the IODP Expedition 342 Scientists   +10 more
doaj   +1 more source

Change in habitat over time for the rare, endemic Pediocactus paradinei

Conservation Science and Practice, Volume 8, Issue 9, September 2026.
Pediocactus paradinei is a rare endemic cactus on the Colorado Plateau that may be increasingly vulnerable to ongoing ecological and climatic change. In 2022, we resampled ecological monitoring plots originally surveyed in 2005 to assess changes in vegetation, habitat conditions, and characteristics related to pollinator habitat across the species ...
Sarah C. Colombo, Sara Souther, Karen A. Haubensak, Clare E. Aslan   +3 more
wiley   +1 more source

Soil and Forest Degradation Driven by Cattle Grazing and Selective Logging in Sub‐Antarctic Nothofagus Ecosystems of Patagonia

Land Degradation &Development, Volume 37, Issue 14, Page 10532-10545, 30 August 2026.
ABSTRACT Soil and forest degradation driven by chronic land‐use pressures is an increasingly widespread process in forested landscapes worldwide, yet its empirical characterization remains limited, particularly in temperate and sub‐Antarctic ecosystems.
Carlos Zamorano‐Elgueta, Susana Valle, Simona Landi, José Dörner, Luis Cayuela   +4 more
wiley   +1 more source

IODP Expedition 378 Compressional strength (penetrometer)

, 2022
Compressional strength was measured on section halves using a Humbolt Manufacturing Pocket Penetrometer. The penetrometer is only suitable for sediment not affected by cementation (i.e., saturated, clay-rich, soft sediment).
Dias, Bruna Borba, Wilkens, Roy H., Tanaka, Erika, Jones, Heather L., Drury, Anna J., Röhl, Ursula, Hollis, Christopher J., Kitch, Gabriella D., Khanolkar, Sonal S., Sibert, Elizabeth, Yuan, Wei, George, Simon C., Lee, Hojun, Sheward, Rosie M., Zhang, Qiang, Anagnostou, Eleni, Boscolo Galazzo, Flavia, Dunlea, Ann G., Raffi, Isabella, Zhang, Yang, Brzelinski, Swaantje, Thomas, Deborah J., Hendy, Ingrid L., Ausín, Blanca, Haynes, Laura L., Reis, Alex J., Yasukawa, Kazutaka, Childress, Laurel B.   +27 more
core   +1 more source

Development of Liquefaction‐Targeted Design Basis in U.S. Seismic Provisions

Earthquake Spectra, Volume 42, Issue 3, August 2026.
Seismic design criteria for new buildings in the United States have historically focused on life safety performance objectives through minimizing the potential for structural collapse. Development of design criteria to meet this performance objective has evolved over time, leading to the current, risk‐targeted maximum considered earthquake (MCER ...
Andrew J. Makdisi, Steven L. Kramer, Patrick Bassal, Brett W. Maurer, William Perkins, Donald Anderson, C. B. Crouse, Shideh Dashti, David P. Teague   +8 more
wiley   +1 more source