搜索结果: 1-15 共查到“理学 steep”相关记录20条 . 查询时间(0.077 秒)
Developing countries pay steep economic and health costs because of high car air pollution
car air pollution economic development developing countries GDP
2021/8/4
Some of the world's most vulnerable cities suffer disproportionate economic losses because of the health consequences of in-car air pollution, finds a new study.
Seascape genetics along a steep cline: using genetic patterns to test predictions of marine larval dispersal
steep cline genetic patterns
2015/12/11
Coupled biological and physical oceanographic models are powerful tools for studying
connectivity among marine populations because they simulate the movement of larvae
based on ocean currents and la...
SEMI-AUTOMATIC LANDFORM MAPPING AT STEEP SLOPES
semi-automatic segmentation landform mapping image matching surface parameterization
2015/9/28
The traditional mapping on digital aerial photos and elevation models has its limits at steep slopes where the surface is only very sparsely
sampled even in high resolution data sets. As a consequenc...
The study of local sources of ULF geoelectric signals with steep fronts
geoelectricity earthquakes prediction method VAN
2015/9/14
The method for recognition and monitoring of ULF electrotelluric signals with steep fronts is presented. The method is based on the multicomponent measurements of the geoelectric field and recognition...
ORTHOPROJECTION TESTS OF HYPERSPECTRAL DATA IN STEEP SLOPE ZONES
Remote Sensing Image Geometry Orthoprojection whiskbroom accuracy Hyper spectral Neural network RFM
2015/7/29
Nowadays hyperspectral data are really important in the environmental field. While the advantages, due to their radiometric features
are broadly documented a rigorous metric verification is still ab...
Continuum deformation and stability analyses of a steep hillside slope under rainfall infiltration
Coupled formulation Rainfall infiltration Slope stability Stabilized finite elements Unsaturated soil
2015/7/1
Rainfall weakens an earth slope in a number of ways. It increases the degree of saturation of the soil, thereby breaking the bonds created by surface tension between the soil particles. When the volum...
Sediment storage by vegetation in steep bedrock landscapes: Theory, experiments, and implications for postfire sediment yield
Sediment storage by vegetation steep bedrock landscapes Theory experiments implications postfire sediment yield
2014/4/8
Mechanistic models for sediment transport on hillslopes are needed for applications ranging from landscape evolution to debris-flow hazards. Progress has been made for soil-mantled landscapes; however...
Influence of bed patchiness, slope, grain hiding, and form drag on gravel mobilization in very steep streams
Influence of bed patchiness slope grain hiding form drag on gravel mobilization very steep streams
2014/4/8
Steep streams are a major portion of channel networks and provide a link to transport sediment from hillslopes to lower gradient rivers. Despite their importance, key unknowns remain, perhaps foremost...
Anomalously steep dips of earthquakes in the 2011 Tohoku-Oki source region and possible explanations
subduction zone the 2011 Tohoku-Oki earthquake focal mechanism fault geometry seamount fault zone structure
2014/4/9
The 2011Mw9.1 Tohoku-Oki earthquake had unusually large slip (over 50 m) concentrated in a relatively small region, with local stress drop inferred to be 5–10 times larger than that found for typical ...
Controllable steep dispersion with gain in a four-level N-scheme with four-wave mixing
Controllable steep dispersion gain four-level N-scheme four-wave mixing Atomic Physics
2012/5/31
We present a theoretical analysis of the propagation of light pulses through a medium of four-level atoms, with two strong pump fields and a weak signal field in an N-scheme arrangement. We show that ...
Lattice Slope Foundation-Cantilever Structure Complex Road for the Roadway Widening in Steep-Sloped Mountainous Areas
Cantilevered Road Environmental Protection Highway Lattice Mountain Road Road Widening
2011/12/16
Abstract In view of good geological condition non-cliff side slope road widening or new road construction, after contrasting and analyzing the characteristics of widening pattern of roads that have be...
Dynamic Response of High Steep Rock Slopes Based on Wenchuan Near-Field Seismic Motion Characteristics
Dynamic Response Features High Steep Rock Slope Seismic Force Wenchuan Earthquake
2011/12/20
Near-field seismic motion characteristics are analyzed in accordance with records of the 2008 Ms8.0 Wenchuan Earthquake measured at Wolong Station, upon which the determination of seismic load is intr...
An experimental study of particle-driven gravity currents on steep slopes with entrainment of particles
particle-driven gravity currents steep slopes entrainment of particles
2009/12/9
Results of laboratory experiments are presented in which a finite suspension of sawdust particles was released instantaneously into a rectangular channel immersed in a water tank. Two kinds of gravity...
On the interaction of wind and steep gravity wave groups using Miles' and Jeffreys' mechanisms
interaction of wind steep gravity wave groups Miles' and Jeffreys' mechanisms
2009/11/2
The interaction of wind and water wave groups is investigated theoretically and numerically. A steep wave train is generated by means of dispersive focusing, using both the linear theory and fully non...
Future Work on the Kitaigorodskii Rougness Length Model:A New Derivation Using Lettau's Expression on Steep Waves
Roughness waves wave spectrum Charnock constant wave age
2009/6/10
A model for the roughness of the sea surface is derived by a combination of two ideas: a)
Kitaigorodskii's (1973) about wavelets being roughness elements that move with their associated phase speed; ...