Results 11 to 20 of about 262,930 (312)

Amazonian-aged fluvial system and associated ice-related features in Terra Cimmeria, Mars [PDF]

open access: yes, 2016
The Martian climate throughout the Amazonian is widely believed to have been cold and hyper-arid, very similar to the current conditions. However, ubiquitous evidence of aqueous and glacial activity has been recently reported, including channels that can
Adeli, Solmaz   +6 more
core   +3 more sources

Genesis and abiotic characteristics of three high-altitude peatlands in the Tien Shan Mountains (Kyrgyzstan), with focus on silty peatland substrates [PDF]

open access: yesMires and Peat, 2016
Peatlands are scarce and threatened ecosystems in the semiarid region of Kyrgyzstan. Knowledge about the Kyrgyz peatlands is still poor and, especially, their genesis has hardly been investigated so far.
R. Müller   +3 more
doaj   +1 more source

Propulsión eléctrica a partir de celdas de hidrógeno: impacto en mitigación de huella de carbono

open access: yesRevista UIS Ingenierías, 2023
El aumento de la temperatura global, como consecuencia de las emisiones de gases de efecto invernadero, sigue siendo una de las principales preocupaciones que ha provocado un profundo interés en la implementación del hidrógeno como fuente de generación ...
Marcela Patricia Arrieta-García   +2 more
doaj   +1 more source

Multidecadal Analysis of an Engineered River System Reveals Challenges for Model-Based Design of Human Interventions

open access: yesCivilEng, 2021
Hydraulic models were used in practice to predict the effect of human intervention during extreme conditions. However, the accuracy of such predictions remains untested.
Koen D. Berends   +3 more
doaj   +1 more source

Mapping the interactions between rivers and sand dunes: Implications for fluvial and aeolian geomorphology [PDF]

open access: yes, 2014
The interaction between fluvial and aeolian processes can significantly change Earth surface morphology. When rivers and sand dunes meet, the interaction of sediment transport between the two systems can lead to change in either or both systems. However,
Coulthard, Tom J., Liu, Baoli
core   +1 more source

Using three different approaches of OSL for the study of young fluvial sediments at the coastal plain of the Usumacinta–Grijalva River Basin, southern Mexico [PDF]

open access: yes, 2016
We use three different approaches of optically stimulated luminescence (OSL) to study young fluvial sediments located at the main channels of one of the largest fluvial systems of North America: the Usumacinta–Grijalva. We use the pulsed photo-stimulated
Castillo, Miguel   +4 more
core   +1 more source

Paleohydrology and Machine-Assisted Estimation of Paleogeomorphology of Fluvial Channels of the Lower Middle Pennsylvanian Allegheny Formation, Birch River, WV

open access: yesFrontiers in Earth Science, 2020
Rivers transport sediments in a source to sink system while responding to allogenic controls of the depositional system. Stacked fluvial sandstones of the Middle Pennsylvanian (Desmoinesian Stage, ∼310–306 Ma) Allegheny Formation (MPAF) exposed at Birch ...
Oluwasegun Abatan, Amy Weislogel
doaj   +1 more source

Distribution and dietary habits of Lepomis gibbosus in Natura 2000 sites of Cyprus [PDF]

open access: yesNature Conservation
Species introductions are widely reported as a major threat to biodiversity conservation in Natura 2000 sites. Pumpkinseed Lepomis gibbosus was introduced in Europe in the late 19th century and is currently listed as Invasive Alien Species of Union ...
Athina Papatheodoulou   +6 more
doaj   +3 more sources

The sedimentology and depositional environments of the Bastians Dal and Muslingebjerg formations: evidence for the earliest phases of Jurassic rifting in North-East Greenland

open access: yesGEUS Bulletin, 2022
The aim of this study is to elucidate the character of the earliest phases of Jurassic rifting in North-East Greenland. To achieve this, detailed sedimentological analysis and geological mapping were undertaken on the outcrops of central Kuhn Ø (74°53’55’
Steven D. Andrews   +2 more
doaj   +1 more source

Alluvial to lacustrine sedimentation in an endorheic basin during the Mio-Pliocene: The Toro Negro Formation, Central Andes of Argentina [PDF]

open access: yes, 2018
A 2400 m-thick sedimentary column belonging to the Toro Negro Formation was recorded along the Quebrada del Yeso, Sierra de Los Colorados (Vinchina Basin), La Rioja province, NW Argentina. The Vinchina basin is a good example of a closed basin surrounded
Amidon, William H.   +4 more
core   +1 more source

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