Transmission of marine seismic survey, air gun array signals in Australian waters (Record no. 2683)
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| 000 -LEADER | |
|---|---|
| fixed length control field | nam a22 7a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20170125155107.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 170125b xxu||||| |||| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Transcribing agency | National Acoustic Laboratories |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | McCauley, Robert D |
| 245 ## - TITLE STATEMENT | |
| Title | Transmission of marine seismic survey, air gun array signals in Australian waters |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc | Measurements of the transmission of seismic survey signals in Australian waters are presented. The measured<br/>transmission loss showed: high variability of received signal sound exposure level at similar ranges when comparing<br/>all surveys (mean of standard deviation across ranges of 3-12 dB); high variability within a seismic survey (mean of<br/>standard deviation at any range of 2-4 dB); typical shot-shot variability of 1-3 dB (mean of standard deviation at any<br/>range) possibly produced by gun strings moving around; the importance of bathymetry profiles, seabed types and<br/>sound speed profiles in determining air gun transmission; different transmission regimes for open ocean,<br/>continental shelf and shelf-slope environments; seismic source energy transmitted at longer ranges (> 1 km) was<br/>most commonly dominated by low frequency (< 500 Hz) energy and only at short range (< 1 km) was high frequency<br/>energy observed; and that a considerable amount of air gun array energy may directly excite the seabed, couple<br/>into the seabed and travel horizontally, or by way of interface waves. For locations on the shelf or shelf slope<br/>around southern and western Australia the presence of limestone or calcarenite seabed types are critical in<br/>accurately determining seismic signal transmission. |
| 773 0# - HOST ITEM ENTRY | |
| Relationship information | 9-11 November 2016, Brisbane Australia |
| Title | Acoustics 2016 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="http://dspace.nal.gov.au/xmlui/bitstream/handle/123456789/543/p42.pdf?sequence=1&isAllowed=y">http://dspace.nal.gov.au/xmlui/bitstream/handle/123456789/543/p42.pdf?sequence=1&isAllowed=y</a> |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Universal Decimal Classification |
| Koha item type | Journal article |
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