Results 121 to 130 of about 413 (265)

La Formación Los Llantenes en la Precordillera de Jagüé (La Rioja) y la identificación de un episodio de extensión en la evolución temprana de las cuencas del Paleozoico superior en el oeste argentino The Los Llantenes Formation in the Precordillera of Jagüé (La Rioja Province) and the recognition of a rifting stage in the early evolution of the late Paleozoic basins in western Argentina

open access: yesAndean Geology, 2011
En la región septentrional de la Precordillera, al NW de La Rioja, en el centro occidental de Argentina, afloran más de 4.000 m de rocas sedimentarias del Paleozoico superior entre las que se destaca una unidad basal psefítica, no descrita con ...
Ricardo A Astini   +2 more
doaj  

Wheat Sowing Practices in No‐Tillage Systems Modify the Microrelief and Hydrosedimentological Attributes: RPAS‐Based Photogrammetry

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT The microtopographic characteristics of terrain are modified by soil management and conservation practices, affecting water infiltration, storage, runoff generation, and sediment transport. However, assessing soil microtopography at representative spatial scales remains challenging and time‐consuming.
Jhonatan Spliethoff   +5 more
wiley   +1 more source

The Impact of Climate Change on Soil Erosion Rates in the Chernozem Zone of Ukraine

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Soil degradation driven by accelerated water erosion threatens global food security. Quantitative estimates of soil erosion losses allow at‐risk areas to be identified and the success of soil management plans to be monitored. However, estimating soil erosion losses under changing climatic conditions is challenging, particularly at the scales ...
Alla V. Piatkova   +2 more
wiley   +1 more source

Dominance of felsic continental crust on Earth after 3 billion years ago is recorded by vanadium isotopes. [PDF]

open access: yesProc Natl Acad Sci U S A, 2023
Tian S   +9 more
europepmc   +1 more source

Implications of heterogeneous embankment conditions for geoelectrical investigations on dams: A case study at Mactaquac Dam, Canada

open access: yesNear Surface Geophysics, EarlyView.
Abstract Electrical resistivity tomography (ERT) has been shown to be effective for surveying and monitoring dams, due to the method's sensitivity to moisture content and relevant physical properties (e.g., porosity). Automated ERT systems, capable of time‐lapse monitoring, can be used to detect variations in ground conditions.
John S. Ball   +4 more
wiley   +1 more source

Using synthetic models to understand the detecting ability of ground‐penetrating radar for water‐conducting structures in the bedrock of formerly glaciated site

open access: yesNear Surface Geophysics, EarlyView.
Abstract Utilizing synthetic models for the interpretation of ground‐penetrating radar (GPR) profiles can aid in the detection of hydrogeological structures by identifying their signatures. In this study, finite difference (FD) forward modelling was used to understand the detection ability of 50 MHz GPR for (1) the quaternary deposit–bedrock contact ...
Annika Katarina Åberg   +5 more
wiley   +1 more source

Narratives of ‘home landscapes’ guide stewardship practices among Swedish forest owners

open access: yesPeople and Nature, EarlyView.
Abstract Production forests play an important role in addressing many of our current sustainability challenges. Therefore, how these forests are managed and what motivates the people who are managing them are important for sustainability. 47 per cent of forests in Europe are privately owned.
Katja Malmborg   +3 more
wiley   +1 more source

A Review of Mechanical Reinforcement and Piezoresistive Self‐Sensing in Carbon Nanotube Fiber Composites

open access: yesPolymer Composites, EarlyView.
PSPP‐TRL mapping of CNT‐modified CFRP literature, with four recurring confusions resolved and five scale‐up problems quantified. ABSTRACT Carbon nanotube‐modified fiber composites are often presented as a route to stronger, tougher, and self‐sensing structural materials.
Sanan H. Khan
wiley   +1 more source

Internal Structure, Kinematics, and Prehistory of Frozen Debris Lobe‐A (FDL‐A), Brooks Range, Alaska

open access: yesPermafrost and Periglacial Processes, EarlyView.
ABSTRACT Frozen Debris Lobe‐A (FDL‐A)—one of hundreds of FDLs in the Brooks Range of northern Alaska—is a slow‐moving landslide in permafrost that has been the subject of research since 2008 due to its close proximity to the Dalton Highway. Here, we synthesize more than a decade's worth of climate and surface measurements of monitored FDLs, and the ...
Margaret M. Darrow   +2 more
wiley   +1 more source

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