Circulation On The Northern California Shelf And Slope

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Environmental Studies Contract and Report Index

Author : United States. Minerals Management Service. Pacific OCS Region
Publisher : Unknown
Page : 42 pages
File Size : 46,9 Mb
Release : 1991
Category : Ecology
ISBN : UCBK:C058706740

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Environmental Studies Contract and Report Index by United States. Minerals Management Service. Pacific OCS Region Pdf

Continental Margin Sedimentation

Author : Charles A. Nittrouer,James A. Austin,Michael E. Field,Joseph H. Kravitz,James P. M. Syvitski,Patricia L. Wiberg
Publisher : John Wiley & Sons
Page : 560 pages
File Size : 40,7 Mb
Release : 2009-03-12
Category : Science
ISBN : 9780470766361

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Continental Margin Sedimentation by Charles A. Nittrouer,James A. Austin,Michael E. Field,Joseph H. Kravitz,James P. M. Syvitski,Patricia L. Wiberg Pdf

This volume on continental margin sedimentation brings together an expert editorial and contributor team to create a state-of-the-art resource. Taking a global perspective, the book spans a range of timescales and content, ranging from how oceans transport particles, to how thick rock sequences are formed on continental margins. Summarizes and integrates our understanding of sedimentary processes and strata associated with fluvial dispersal systems on continental shelves and slopes Explores timescales ranging from particle transport at one extreme, to deep burial at the other Insights are presented for margins in general, and with focus on a tectonically active margin (northern California) and a passive margin (New Jersey), enabling detailed examination of the intricate relationships between a wide suite of sedimentary processes and their preserved stratigraphy Includes observational studies which document the processes and strata found on particular margins, in addition to numerical models and laboratory experimentation, which provide a quantitative basis for extrapolation in time and space of insights about continental-margin sedimentation Provides a research resource for scientists studying modern and ancient margins, and an educational text for advanced students in sedimentology and stratigraphy

Government Reports Annual Index

Author : Anonim
Publisher : Unknown
Page : 1836 pages
File Size : 50,9 Mb
Release : 1993
Category : Government reports announcements & index
ISBN : WISC:89053250015

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Government Reports Annual Index by Anonim Pdf

Lagrangian Measurements of Eddy Characteristics in the California Current System

Author : James Gary Sires
Publisher : Unknown
Page : 138 pages
File Size : 50,8 Mb
Release : 1997
Category : Science
ISBN : UCSD:31822025980509

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Lagrangian Measurements of Eddy Characteristics in the California Current System by James Gary Sires Pdf

During the Eastern Boundary Current program in 1993, 96 Argos-tracked surface drifters, drogued to 15 m depth, and satellite thermal imagery were used to provide a description of the mesoscale features in the California Current System off the northern California coast. The drifter movements and satellite images revealed a highly energetic series of filaments and eddies that dominated the summer flow field off the coast, similar to those noted in the earlier CODE, OPTOMA, and CTZ studies. Winter mesoscale activity in the region was less energetic, with the principle feature being the poleward-flowing Davidson Current. Translation rates for mesoscale eddies were deduced from drifter trajectories in the summer period. Translation rates, vorticity, divergence and eddy center positions were also estimated for a cyclone and anticylone sampled in July and September, respectively, by constraining observed drifter velocities to a linear Taylor expansion in the least square sense. Translation rates from this technique were similar to those observed from previous shipboard surveys and drifter motions. Using observations over 7 (12) days, the cyclonic (anticyclonic) eddy was determined to have a translation rate of 3.7 (4.2) cm/s to the southwest. The least square technique, applied to shorter time periods, however, provided unreliable estimates of eddy properties when drifters were not evenly distributed around the eddy.

An Entropic Framework for AUV Sensor Modelling

Author : Hanumant Singh
Publisher : Unknown
Page : 500 pages
File Size : 44,9 Mb
Release : 1995
Category : Coherence (Optics)
ISBN : UCSD:31822008797789

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An Entropic Framework for AUV Sensor Modelling by Hanumant Singh Pdf

This thesis examines the general task of active sensing by defining a measure of efficiency for sensing in a particular environment. We focus on fine-scale acoustic mapping from an autonomous underwater vehicle (AUV). The constraints on imaging underwater - vehicle power, vehicle hydrodynamics, computational and telemetry requirements, and typical navigational and attitudinal uncertainties along with the underlying physics of the acoustic sensing modality- are considered in defining an entropic measure of sensor efficiency. 675-kHz pencil-beam sonar data acquired using the JASON remotely operated vehicle in a challenging shallow water environment and 200-kHz echo-sounder data acquired using the ABE A UV are used to demonstrate the utility of the en tropic framework. We show the utility of an entropic framework for the following: (i) Optimizing the speed of the AUV for maximizing the information gathered with a particular sensor. (ii) the rate of convergence and the stability of our mapping efforts in the face of typical uncertainties in navigation and attitude; (iii) as a methodology for actual sensor deployment and use on a real vehicle; and (iv) in tasks such as post-mission analysis for applications such as change detection and path planning for subsequent missions.

Marine Research

Author : Anonim
Publisher : Unknown
Page : 764 pages
File Size : 44,6 Mb
Release : 1969
Category : Marine biology
ISBN : STANFORD:36105130072387

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Marine Research by Anonim Pdf

Marine Research, Fiscal Year 1968

Author : National Council on Marine Resources and Engineering Development (U.S.)
Publisher : Unknown
Page : 756 pages
File Size : 55,8 Mb
Release : 1969
Category : Marine biology
ISBN : UCSD:31822016475782

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Marine Research, Fiscal Year 1968 by National Council on Marine Resources and Engineering Development (U.S.) Pdf

Crescent City, California

Author : Anonim
Publisher : Unknown
Page : 276 pages
File Size : 48,6 Mb
Release : 1981
Category : Harbors
ISBN : UCR:31210025027705

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Crescent City, California by Anonim Pdf