Results 41 to 50 of about 662,378 (195)

Quantitative mapping of alluvial fan evolution using ground-based reflectance spectroscopy

open access: yes, 2012
Research paper based on primary research in CreteThe ability of field-based reflectance spectroscopy to resolve the relative proportions of Fe-oxides and clays in soils was used to map the composition, relative age and distribution of segments within ...
Pope, Richard J. J.   +2 more
core   +1 more source

Fluvio-alluvial source-sink relationships at the Skeleton Coast of northern Namibia: a parametric analysis [PDF]

open access: yesEarth Surface Dynamics
The hyperarid Skeleton Coast of Namibia hosts a diverse suite of alluvial landforms, often shaped by varying degrees of lateral and distal confinement primarily through fan coalescence, the Atlantic Ocean, and the Skeleton Coast Erg.
J. Mohren   +7 more
doaj   +1 more source

Research on sedimentary facies of Guantao Formation in Shanjiasi area of Dongying depression, China

open access: yesEnergy Reports, 2021
Alluvial fan and Fluvial facies sand bodies are important reservoirs for oil and gas resources. In this study, the sedimentary characteristics and evolutionary patterns of Alluvial fan and fluvial deposits in the Neogene Guantao Formation of the Dongying
Zijian Cheng   +6 more
doaj   +1 more source

Depth dependence and exponential models of permeability in alluvial-fan gravel deposits [PDF]

open access: yes, 2013
To determine depth dependence of permeability in various geologic deposits, exponential models have often been proposed. However, spatial variability in hydraulic conductivity, K, rarely fits this trend in coarse alluvial aquifers, where complex ...
Ikeda, Ryuji   +3 more
core   +1 more source

Reevaluating flood protection: disaster risk reduction for urbanized alluvial fans [PDF]

open access: yesNatural Hazards and Earth System Sciences
The deterioration of check dams and other flood prevention measures, combined with storms breaking historical records, has created an immediate risk of floods and debris flows breaching urbanized alluvial fans.
T. Grodek, T. Grodek, G. Benito
doaj   +1 more source

Hydromorphometric Analysis of Wadi Al-Batin Alluvial Fan Using Remote Sensing and GIS Techniques, Southwestern Iraq

open access: yesIraqi Geological Journal, 2022
Wadi Al-Batin alluvial fan starts from Wadi Al-Rummah in Saudi Arabia and passes through the Kuwait and Iraq borders. The fan represents the southern and northern limits of the Iraq and Kuwait national boundary, respectively, deposited by Wadi ...
Suaad Albhadili   +2 more
doaj   +1 more source

Effects of land uses on soil physic-chemical properties and erodibility in collapsing-gully alluvial fan of Anxi County, China

open access: yesJournal of Integrative Agriculture, 2016
As a special kind of soil erosion that severely deteriorates the qualities of soil in granite regions, collapsing gully is widely distributed in the tropical and subtropical areas of South China.
Yu-song DENG   +3 more
doaj   +1 more source

Late Holocene landscape change history related to the Alpine Fault determined from drowned forests in Lake Poerua, Westland, New Zealand [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2012
Lake Poerua is a small, shallow lake that abuts the scarp of the Alpine Fault on the West Coast of New Zealand's South Island. Radiocarbon dates from drowned podocarp trees on the lake floor, a sediment core from a rangefront alluvial fan, and living ...
R. M. Langridge   +3 more
doaj   +1 more source

The Relationship between Surface Displacement and Groundwater Level Change and Its Hydrogeological Implications in an Alluvial Fan: Case Study of the Choshui River, Taiwan

open access: yesRemote Sensing, 2020
Balancing the demand of groundwater resources and the mitigation of land subsidence is particularly important, yet challenging, in populated alluvial fan areas.
Chiao-Yin Lu   +4 more
doaj   +1 more source

An Alluvial Fan at Apollinaris Patera, Mars [PDF]

open access: yes, 2003
Apollinaris Patera, Mars (7˚S,173˚E), is an intermediate sized volcano (~6 km high, 150 km diameter) with a large (200-km long) fan-like deposit on its southern flank.
Hutchison, JE, Ghail, RC
core  

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