The computation of sea surface currents from sequential satellite imagery
Author: Donald Wayne Tucker
Publisher:
Published: 2000
Total Pages: 254
ISBN-13:
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Author: Donald Wayne Tucker
Publisher:
Published: 2000
Total Pages: 254
ISBN-13:
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Publisher:
Published: 1991
Total Pages: 3
ISBN-13:
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Published: 1992
Total Pages: 56
ISBN-13:
DOWNLOAD EBOOKAuthor: Chung-Ming Fang
Publisher:
Published: 1987
Total Pages: 51
ISBN-13:
DOWNLOAD EBOOKA technique is presented which uses an interactive computer program to estimate sea surface current velocities from the displacement of sea surface temperature (SST) patterns apparent in enhanced sequential infrared images obtained from the NOAA-6 Advanced Very High Resolution Radiometer. This technique was applied to the surface currents of the California Current System using IR image data from 27 and 28 April 1981. This technique, which uses enhanced pseudocolor gradient imagery, produced more current vectors than an earlier technique develop by O'Hara (1987) which used unenhanced gray scale imagery. The resultant surface vectors agree well in direction but underestimate velocities obtained from Doppler Acoustic Log (DAL) measurements taken during the same period. The two methods produced closest agreement of current velocities of less than 40 cm/sec and with satellite-derived velocities obtained with sequential 12 hour images rather than sequential 24 hour images. Satellite-derived velocities in the rapid flow area (larger than 40 cm/sec) showed poor correspondence to DAL-measured velocities. The strong current shear in these areas may distort the surface SST patterns making identification of features between two images more difficult. The satellite derived surface velocities are assumed to be representative of the velocities of the upper mixed layer, which is usually 10 to 30 m deep in the study region.
Author: Arthur P Cracknell
Publisher: World Scientific
Published: 1992-09-16
Total Pages: 406
ISBN-13: 9814569364
DOWNLOAD EBOOKThe advent of Earth-observing satellites has revolutionised the gathering of oceanographic data and the visualisation of oceanographic processes. This course was for postgraduate students and young post-doctoral research workers and covered the instruments and satellite systems used to gather visible, infrared and microwave data over the oceans. It also covered the uses of these various types of data to provide information about ocean colour, biological productivity, surface temperature, currents and circulation patterns, near-surface windspeeds, bottom topography and the geoid.
Author:
Publisher:
Published: 2002
Total Pages: 1182
ISBN-13:
DOWNLOAD EBOOKAuthor: Timothy Cole Gallaudet
Publisher:
Published: 1991
Total Pages: 662
ISBN-13:
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Publisher:
Published: 1993
Total Pages: 318
ISBN-13:
DOWNLOAD EBOOKAuthor: Richard E. Thomson
Publisher: Elsevier
Published: 2024-07-16
Total Pages: 892
ISBN-13: 0323993133
DOWNLOAD EBOOKData Analysis Methods in Physical Oceanography, Fourth Edition provides a practical reference to established and modern data analysis techniques in earth and ocean sciences. In five sections, the book addresses data acquisition and recording, data processing and presentation, statistical methods and error handling, analysis of spatial data fields, and time series analysis methods. The updated edition includes new information on autonomous platforms and new analysis tools such as “deep learning and convolutional neural networks. A section on extreme value statistics has been added, and the section on wavelet analysis has been expanded. This book brings together relevant techniques and references recent papers where these techniques have been trialed. In addition, it presents valuable examples using physical oceanography data. For students, the sections on data acquisition are useful for a compilation of all the measurement methods. Includes content co-authored by scientists from academia and industry, both of whom have more than 30 years of experience in oceanographic research and field work Provides boxed worked examples that address typical data analysis problems, including examples with computer code (e.g., python code, MATLAB code) Presents brief summaries at the end of the more difficult sections to help readers looking for foundational information