搜索结果: 1-10 共查到“地球科学总论 Attenuation”相关记录10条 . 查询时间(0.083 秒)
Attenuation of P, S and Coda Waves in the NW-Himalayas, India
Attenuation Quality Factor Frequency Dependence NW Himalayas
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2013/3/7
The frequency-dependent characteristics of P- and S-wave attenuation in the upper crust of NW Himalayas have been estimated using local earthquakes for a frequency range of 1.5 to 18 Hz. A total of 43...
Site Dependence Earthquake Spectra Attenuation Modeling: Nigerian Case Study
Ground-Motion Modelling Seismic Fracture Velocity Acceleration
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2013/3/7
Recent seismic events recorded in South-western Nigeria indicate that the country may not be aseismic as had hitherto thought. Geologic and geodetic evidences suggest the existence of large fracture z...
Increased ocean carbon export in the Sargasso Sea linked to climate variability is countered by its enhanced mesopelagic attenuation
Increased ocean carbon the Sargasso Sea climate variability enhanced mesopelagic attenuation
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2010/1/21
Photosynthetic CO2 uptake by oceanic phytoplankton and subsequent export of particulate organic carbon (POC) to the ocean interior comprises a globally significant biological carbon pump, controlled i...
Increased ocean carbon export in the Sargasso Sea linked to climate variability is countered by its enhanced mesopelagic attenuation
ocean carbon export Sargasso Sea climate variability mesopelagic attenuation
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2010/1/7
Photosynthetic CO2 uptake by oceanic phytoplankton and subsequent export of particulate organic carbon (POC) to the ocean interior comprises a globally significant biological carbon pump, controlled i...
Empirical Attenuation Relationships for Western Anatolia,Turkey
attenuation relationship horizontal-to-vertical spectral ratio peak ground acceleration nonlinear soil behaviour western Anatolia Turkey
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2010/1/11
Seismic hazard studies have become progressively more important for earthquake engineering applications in western Anatolia, which contains one of the world’s best examples of a rapidly extending intr...
Natural Attenuation of Fuel Hydrocarbon Contaminants:Correlation of Biodegradation with Hydraulic Conductivity in a Field Case Study
Benzene BTEX Natural attenuation Contaminant transport model Aquifer heterogeneity Kinetics
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2007/12/19
Two biodegradation models are developed torepresent natural attenuation of fuel－hydrocarbon contaminants as observed in a comprehensive natural-gradient tracer test in a heterogeneous aquifer on the C...
Natural variability of bio-optical properties in Case 1 waters:attenuation and reflectance within the visible and near-UV spectral domains,as observed in South Pacific and Mediterranean waters
Natural variability bio-optical properties attenuation reflectance
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2010/1/14
The optical properties of Case 1 waters have been empirically related to the chlorophyll concentration, [Chl], historically used as an index of the trophic state and of the abundance of the biological...
Rainfall rate retrieval in presence of path attenuation using C-band polarimetric weather radars
Rainfall rate path attenuation C-band polarimetric weather radars
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2009/12/29
Weather radar systems are very suitable tools for the monitoring of extreme rainfall events providing measurements with high spatial and temporal resolution over a wide geographical area. Nevertheless...
Quantitative analysis of X-band weather radar attenuation correction accuracy
Quantitative analysis X-band weather radar attenuation correction accuracy
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2009/12/29
At short wavelengths, especially C-, X-, and K-band, weather radar signals are attenuated by the precipitation along their paths. This constitutes a major source of error for radar rainfall estimation...
Model-based iterative approach to polarimetric radar rainfall estimation in presence of path attenuation
Model-based iterative approach polarimetric radar rainfall estimation path attenuation
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2010/1/22
A new model-based iterative technique to correct for attenuation and differential attenuation and retrieve rain rate, based on a neural-network scheme and a differential phase constraint, is presented...