ASFA 2: Ocean Technology,Policy and Non-Living Resources

In the wake of growing concern over limited natural resources, scientists and engineers are increasingly turning to the sea for answers. ASFA 2 is the source that puts professionals in touch with effective management solutions, alerts them to problems, and updates them on new legislation that affects management practices. Coverage spans the wide-ranging fields of oceanography: physical, descriptive, dynamical, chemical, geological, and biological aspects are extensively examined, as well as limnology, ocean engineering, and specific resources. From international policy and legislation to meteorology and climatology to technology and engineering, ASFA 2 covers the crucial current issues.

Copyright 2006 FAO (On behalf of the ASFA Advisory Board). All rights reserved.

Major areas of coverage include:

• Law, Policy, Economics, and Social Sciences
• Descriptive Oceanography and Limnology
• Dynamical Oceanography and Limnology
• Chemistry and Geochemistry
• Underwater Acoustics
• Underwater Optics
• Marine Meteorology and Climatology
• Geology and Geophysics
• Marine Technology
• Vessels, Underwater Vehicles, and Buoys
• Offshore and Coastal Structures
• Man-in-the-Sea and Diving
• Support Services, Techniques, and Equipment
• Resources
• Commerce, Trade, and Economics

1971 - current. Note: These are several hundred records published before 1971.

Monthly, with approximately 179 new records added

Over 339,522 records as of February 2007

ASFA Part 2: Ocean Technology, Policy and Non-Living Resources

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TI:	Title Transmission loss in the far field over a seabed with rigid substrate assuming the Biot sediment model
AU:	Author Buchanan, JL; Gilbert, RP
AF:	Author Affiliation Math. Dep., U.S. Naval Acad., Annapolis, MD 21402, USA
SO:	Source J. COMPUT. ACOUSTICS, vol. 4, no. 1, pp. 29-54, 1996
IS:	ISSN 0218-396X
NT:	Notes Special issue: Computational methods in underwater acoustics.
AB:	Abstract A system of differential equations is derived from Biot's constitutive and motion equations for a poroelastic material. The seabed is modeled as a poroelastic layer over a rigid substrate. A residue expansion for pressure in the far field is found in the case of constant parameters. The model's prediction for transmission loss is examined for five different types of sediments.
LA:	Language English
SL:	Summary Language English
PY:	Publication Year 1996
PT:	Publication Type Journal Article
DE:	Descriptors ocean floor; acoustics; sound transmission; sound attenuation; modelling; sediment composition
ER:	Environmental Regime Marine
TR:	ASFA Input Center Number CS9619358
CL:	Classification Q2 02203 Propagation of sound; O 2010 Physical Oceanography
SF:	Subfile ASFA 2: Ocean Technology Policy & Non-Living Resources; Oceanic Abstracts
AN:	Accession Number 3945982

The following field codes are found in the records of this database. Here they are listed in alphabetical order by two-letter code.

AB = Abstract	IS = ISSN
AF = Author Affiliation	LA = Language
AN = Accession Number	NT = Notes
AU = Authors	NU = Other Numbers
CA = Corporate Author	OT = Original Title
CF = Conference	PB = Publisher
CL = Classification	PT = Publication Type
DE = Descriptors	PY = Publication Year
ED = Editor	SF = Subfile
EM = Entry Month	SL = Summary Language
ER = Environmental Regime	SO = Source
IB = ISBN	TI = Title
ID = Identifiers	TR = ASFA Input Center Number