Results 41 to 50 of about 1,289 (177)

Fallen and Lost into the Abyss? A Mesolithic Human Skull from Sima Hedionda IV (Casares, Málaga, Iberian Peninsula)

Open Archaeology, 2022
The presence of scattered prehistoric human bones in caves and sinkholes is common in many regions of Iberia. These are usually interpreted as erratic elements coming from burial contexts, usually collective associations.
Martinez-Sanchez Rafael M., Bretones-García María Dolores, Valdiosera Cristina, Vera-Rodríguez Juan Carlos, López Flores Inmaculada, Simón-Vallejo María D., Ruiz Borrega Pilar, Martínez Fernández María J., Romo Villalba Jorge L., Bermúdez Jiménez Francisco, Martín de los Santos Rafael, Pardo-Gordó Salvador, Cortés Sánchez Miguel   +12 more
doaj   +1 more source

Drainage Mechanisms of Submerged Sinkholes

Remote Sensing, 2023
Subsurface salt layer dissolution along the western shores of the Dead Sea is considered to be the primary cause for extensive large sinkhole formation in the past 40 years. Many of these sinkholes are arranged in clusters and are filled with water from nearby springs.
Assaf Tsabar, Eyal Shalev, Amir Sagy, Yizhaq Makovsky   +3 more
openaire   +2 more sources

Scientists’ warning on the global destruction of rock outcrop ecosystems

Conservation Biology, EarlyView.
Abstract Rock outcrops are geological formations that harbor a highly specialized biota adapted to harsh environmental conditions that differ from their surrounding landscapes. They are globally distributed, especially in old, highly weathered landscapes, and can function as habitat islands containing high levels of endemism and distinct evolutionary ...
Luiza F. A. de Paula, Lucas N. Perillo, Gianluigi Ottaviani, Flávio F. Carmo, Mandar N. Datar, Katherine C. Enebeli‐Ekwutoziam, Bruno Fogliani, Stephen D. Hopper, Aboli Kulkarni, Hans Lambers, Rafael F. Magalhães, Frederico S. Neves, Jean‐François Ponge, Stefan Porembski, Bruno H. P. Rosado, Fernando M. G. Santos, Elycée Tindano, Bram Vanschoenwinkel, Aparna Watve, Fernando A. O. Silveira   +19 more
wiley   +1 more source

Sinkhole Detection and Characterization Using LiDAR-Derived DEM with Logistic Regression

Remote Sensing, 2019
Depressions due to sinkhole formation cause significant structural damages to buildings and civil infrastructure. Traditionally, visual inspection has been used to detect sinkholes, which is a subjective way and time- and labor-consuming.
Yong Je Kim, Boo Hyun Nam, Heejung Youn   +2 more
doaj   +1 more source

On the Use of Tri-Stereo Pleiades Images for the Morphometric Measurement of Dolines in the Basaltic Plateau of Azrou (Middle Atlas, Morocco)

Remote Sensing, 2021
Hundreds of large and deep collapse dolines dot the surface of the Quaternary basaltic plateau of Azrou, in the Middle Atlas of Morocco. In the absence of detailed topographic maps, the morphometric study of such a large number of features requires the ...
Maria Teresa Melis, Luca Pisani, Jo De Waele   +2 more
doaj   +1 more source

Imaging Point Source Groundwater Discharges in a Confined Coastal Aquifer Using Electrical Resistivity

Groundwater, EarlyView.
Marine electrical resistivity tomography (ERT) is applied to characterize point‐source submarine groundwater discharge (PSGD) along NW Yucatán. ERT observations and forward modeling constrain conduit detectability under varying hydrogeological conditions.
Mariana Gómez‐Nicolás, Armando Huitzilt‐Rodriguez, Enrique Iñiguez, Roger Pacheco‐Castro, Marco Pérez‐Flores, Paulo Salles, Fiona Whitaker   +6 more
wiley   +1 more source

Conservation genomics of Pecos pupfish (Cyprinodon pecosensis)

Journal of Fish Biology, EarlyView.
Abstract The Pecos pupfish, Cyprinodon pecosensis, is an imperilled freshwater fish found in arid regions of Texas and New Mexico (USA). The species faces multiple challenges to persistence including reductions in suitable habitat, water shortages, as well as hybridization and competition with an introduced congener (sheepshead minnow, C.
Elizabeth P. Dolan, Andrew T. Fields, Megan G. Bean, Robyn R. Doege, Joanna L. Hatt, Kevin W. Conway, David S. Portnoy   +6 more
wiley   +1 more source

The Unexpected Discovery of Paleocene? Coals in Outcrops Thought to Be Cambrian, Al Huqf, Oman

Journal of Petroleum Geology, EarlyView.
ABSTRACT Two brown organic deposits were encountered whilst investigating kaolinitic claystones thought to occur at the base of a Cambrian formation at outcrop. The age of these organic deposits is probably Paleocene from palynology. Organic petrography shows that they are subbituminous coals with some oil source potential.
Mohammed H. Al Kindi, Alan P. Heward, Lorraine B. Eglinton, Steve R. Packer, Darrin T. Stead   +4 more
wiley   +1 more source

Past and Present Drivers of Karst Formation of Ciénega de El Mangle, Panama

Quaternary, 2023
Tropical coastal karst areas represent dynamic, fragile, and biodiverse environments. Central America’s karst regions have been scarcely studied, with most of the research focused on the northern part of the region and on several larger cave systems. The
Jaime Rivera-Solís, Adolfo Quesada-Román, Fran Domazetović   +2 more
doaj   +1 more source

Sinkhole Physical Models to Simulate and Investigate Sinkhole Collapses

Sinkholes and the Engineering and Environmental Impacts of Karst: Proceedings of the Fourteenth Multidisciplinary Conference, 2015
Florida is one of the most susceptible states for sinkhole collapses due to its karst geology. In Florida, sinkholes are mainly classified as cover subsidence sinkholes that result in a gradual collapse with possible surface signs, and cover collapse sinkholes, which collapse in a sudden and often catastrophic manner.
Alrowaimi, Mohamed, Yun, Hae-Bum, Chopra, Manoj   +2 more
openaire   +3 more sources