搜索结果: 1-15 共查到“海洋科学 estimation”相关记录23条 . 查询时间(0.215 秒)
Estimation of methanogenesis by quantification of coenzyme F430 in marine sediments
methane hydrate methanogens function-specific compound analysis marine sedimen
font style='font-size:12px;'>
2017/4/10
Coenzyme F430 is the hydrocorphinoid nickel complex which acts as active site in methyl-coenzyme M reductase
(MCR). The MCR-F430 complex catalyzes the last step of methanogenesis: reduction of methyl...
Ocean State Estimation and Prediction in Support of Oceanographic Research
Estimation and Prediction Oceanographic Researc
font style='font-size:12px;'>
2015/8/5
The ocean is changing vigorously on a wide range of time and space scales. This variability leads to substantial problems in observing and modeling (simulating) the rapidly changing flow field, the oc...
Ocean State Estimation for Climate Research
Ocean State Estimation Climate Research
font style='font-size:12px;'>
2015/7/6
Spurred by the development of satellite and in situ observing systems, global ocean state estimation has flourished in the past decade. Today, a suite of global ocean state estimates has been generate...
Parameter Estimation with Constraints Based on Variational Method
least squares estimation parameter estimation variational method constraint
font style='font-size:12px;'>
2011/9/9
The accuracy of parameter estimation is critical when digitally modeling a ship. A parameter estimation method with constraints was developed, based on the variational method. Performance functions an...
Efficient estimation of time-mean states of ocean models using 4D-Var and implicit time-stepping
Efficient estimation time-mean states ocean models 4D-Var implicit time-stepping
font style='font-size:12px;'>
2009/11/3
We propose an efficient method for estimating a time-mean state of an ocean model subject to given observations using implicit time-stepping. The new method uses (i) an implicit implementation of the ...
An Investigation of Longitudinal Motion of the Slender-type Body at Fully Submerged CondituinPart 3 On the Experimental and Empirical Estimation Method of the Hydrodynamic Stability Derivatives
Longitudinal Motion Slender-type Body Hydrodynamic Stability Derivatives
font style='font-size:12px;'>
2009/4/29
This paper consists of two parts. The first part is on the outline of renewd large forced motion machanism to be used in the maneuvering test on submerged body and surface ship model in the large towi...
Application of Gaussian model for the estimation of vertical chlorophyll-a in inner bay using satellite data
Application Gaussian model vertical chlorophyll-a inner bay satellite data
font style='font-size:12px;'>
2009/4/28
An objective of this research is to evaluate the feasibility of the Gaussian distribution model's application for the vertical Chlorophyll-a (Chl-a) estimation in inner bay by the satellite remote sen...
Estimation of Meridional Heat Flux in the North Atlantic by Inverse Methods
Meridional Heat Flux North Atlantic Inverse Methods
font style='font-size:12px;'>
2009/2/19
Hydrographic sections spanning the Atlantic Ocean at 24, 36 and 48°N are used to make an estimate of meridional heat flux in the ocean. An inverse method provides reference level velocities for geostr...
On the Estimation of Absolute Geostrophic Volume Transport Applied to the Antarctic Circumpolar Current
Absolute Geostrophic Volume Transport Antarctic Circumpolar Current
font style='font-size:12px;'>
2009/2/13
An objective method of estimating the geostrophic barotropic volume transport across an oceanographic section is developed and applied to the transport of the Antarctic Circumpolar Current through the...
The Estimation of Wind-Wave Generation in a Discrete Spectral Model
Wind-Wave Generation Discrete Spectral Model
font style='font-size:12px;'>
2009/2/9
The estimation of wind-wave generation using a new discrete spectral model is compared to Hasselmann et al.'s (1976) parametric model and to models driven primarily by direct transfer of energy from t...
Estimation of Low-Frequency Wind Stress Fluctuations over the Open Ocean
Low-Frequency Wind Stress Fluctuations Open Ocean
font style='font-size:12px;'>
2009/2/5
A simple, approximate formula for mean wind stress is given in terms of the mean and variance of the wind fluctuations over the averaging period. The formula is nonlinear with respect to the mean wind...
An Estimation of Sea-Level and Surface-Current Anomalies during the 1972 El Niño and Consequent Thermal Effects
mean flow anomalous motion tropical region Thermal Effects
font style='font-size:12px;'>
2009/2/5
This paper has two main parts. First, it is shown that if the dynamics is simplified by assuming a one-mode, low-frequency (or long-wave) model, the whole field of anomalous motion in the tropical reg...
The Effects of the Variations In Sea Surface Temperature and Atmospheric Stability in the Estimation of Average Wind Speed by SEASAT-SASS
Sea Surface Temperature Atmospheric Stability Average Wind Speed SEASAT-SASS
font style='font-size:12px;'>
2009/1/19
Wind speeds from the scatterometer (SASS) on the ocean observing satellite SEASAT averaged over 2° latitude by 2° longitude and a 92-day period are compared with wind speeds from ship reports in the w...
Maximum Entropy Estimation of the Directional Distribution in Ocean Wave Spectra
Maximum Entropy Estimation Directional Distribution Ocean Wave Spectra
font style='font-size:12px;'>
2009/1/13
A general maximum entropy estimate for the directional distribution of the directional wave spectrum is introduced. The estimate appears to be superior to conventional methods, including maximum likel...
Estimation and Verification of Tidally Induced Residual Currents
Tidally Induced Residual Currents residual currents Cape Sable area
font style='font-size:12px;'>
2009/1/6
Using a multiple regression technique that includes both tidal and wind forcings, the tidally-induced residual current can be estimated from current meter records. However, the estimated mean (long-te...