搜索结果: 76-90 共查到“理学 Sediment”相关记录250条 . 查询时间(0.086 秒)
SEPAL – a simple GIS-based tool to estimate sediment pathways in lowland catchments
SEPAL GIS
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2010/2/3
Even though soil loss in the lowlands imposes not as much a restriction on land use and agricultural productivity as in erosion affected mountainous areas, the input of fine sediment into the rivers a...
Critical conditions of bed sediment entrainment due to debris flow
Critical conditions bed sediment entrainment debris flow
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2009/12/14
The present study describes entrainment characteristics of bed material into debris flow, based on flume tests, numerical and dimensional analyses. Flume tests are conducted to investigate influences ...
Analysis of different water-sediment flow processes in a mountain torrent
different water-sediment flow processes a mountain torrent
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2009/12/14
The installation of ultrasonic gauges or videocameras along the torrent might give more information on this issue. To this regard, the analysis of a flow event which occurred in 2002 in the Moscardo t...
HANDS-ON OCEANOGRAPHY——Sorting Out Sediment Grain Size and Plastic Pollution
Beach erosion beach plastic pollution sediment particle size the buoyancy material density sand
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2015/7/6
This activity familiarizes students with beach erosion, beach health, and the pervasive nature of plastic pollution. Students use measurements of sediment grain size and the buoyancy and density of ma...
Soft-sediment deformation structures in the Late Silurian Stubdal Formation:the result of seismic triggering
Soft-sediment deformation structures Late Silurian Stubdal Formation seismic triggering
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2009/12/3
The Ringerike Group is a lower Old Red Sandstone fluvial sequence that forms part of the Late Silurian foreland basin succession of the Ringerike Group, Oslo Region, southern Norway. The Ringerike Gro...
Human impact on sediment mass movement and submergence of ancient sites in the two harbours of Alexandria,Egypt
Human impact sediment mass movement ancient sites harbours of Alexandria
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2009/12/3
Historic records indicate that structures built in and around the two harbours of Alexandria, Egypt, were periodically damaged by powerful events such as earthquakes and tsunamis. This geoarchaeologic...
Subaqueous sediment gravity flows undergoing progressive solidification
Subaqueous sediment gravity flows progressive solidification
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2009/12/3
The flow-out potential of a body of fluidized sediment following abrupt collapse is discussed through numerical and physical modelling. The emphasis of the analysis procedure is placed on considering ...
Mapping of seabed morphology and shallow sediment structure of the Mauritania continental margin,Northwest Africa:some implications for geohazard potential
seabed morphology shallow sediment structure Mauritania continental margin geohazard potential
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2009/12/3
Seafloor mapping of the Mauritania margin by multibeam bathymetry as well as shallow and high-resolution seismics in combination with core data has revealed a wide variety of seafloor features, which ...
Sediment pathways in the western Barents Sea inferred from clay mineral assemblages in surface sediments
Sediment pathways western Barents Sea clay mineral assemblages surface sediments
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2009/12/2
A new surface sediment sample set gained in the western Barents Sea by the MAREANO program has been analysed for basic clay mineral assemblages.Distribution maps including additional samples from earl...
Sediment distribution and seabed processes in the Troms II area-offshore North Norway
Sediment distribution seabed processes Troms II area
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2009/12/2
As part of the MAREANO-programme, multibeam bathymetry and backscatter, sediment samples, pictures and video data have been interpreted to produce maps of geological terrain forms, seabed reflectivity...
Sediment characteristics and environmental implications in the Lofoten-Barents Sea region
Sediment characteristics environmental implications Lofoten-Barents Sea region
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2009/12/2
In this issue of NJG we present papers focusing on (sub-) recent geological and biological characteristics of the Lofoten - Barents Sea region. This theme covers a wide range of studies ranging from l...
Deciphering the effect of climate change and separating the influence of confounding factors in sediment core records using additive models
Deciphering the effect of climate change separating the influence of confounding factors sediment core records using additive models
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2014/4/17
We describe a new approach to modeling sediment core records, one that uses additive models (AMs) incorporating a serial correlation structure to model residual autocorrelation. Species assemblages, f...
The Influence of Man's Activities in Rivers on Sediment Transport
Influence Man's Activities Sediment Transport
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2009/10/29
An attempt to use old semicompiled data on turbidity, transport and deposition
of suspended material is carried out. The influence of different activities is
illustrated. The change of water chemist...
Recent Hypolimnetic Sediment in Lake Gjersjöen,a Eutrophicated Lake in SE Norway
Hypolimnetic Sediment Lake Gjersjö en Eutrophicated Lake SE Norway
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2009/10/29
During the last decades Lake Gjersjaen has developed from an oligotrophic state
to a level of high eutrophy. The present state is characterized by an intense
primary production in the trophogenic zo...
A Sediment Transport Model for Straight Alluvial Channels
Sediment Transport Model Straight Alluvial Channels
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2009/10/29
The paper presents a simple mathematical model for sediment transport in
straight alluvial channels. The model, which is based on physical ideas related to
those introduced by Bagnold (1954), was or...