SWFSC Marine Mammal Survey, ORCAWALE 2008, Cruise 1635
NOAA Southwest Fisheries Science Center (SWFSC)
Dataset credit
NOAA Southwest Fisheries Science Center (SWFSC)
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Contacts
Role | Name | Organization | |
Primary contact |
Jeffrey Moore |
Southwest Fisheries Science Center, NOAA |
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Secondary contact |
Dave Weller |
NOAA Southwest Fisheries Science Center |
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Data entry |
Ei Fujioka |
Duke University |
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Citation
Barlow, J. 2014. SWFSC Marine Mammal Survey, ORCAWALE 2008, Cruise 1635. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/1065) on yyyy-mm-dd.
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Abstract
The 2008 Oregon, California and Washington Line-Transect Experiment (ORCAWALE) was designed to estimate the abundance of and to describe the distribution of dolphins, whales, and porpoises off the west coast of the United States out to 300 nautical miles. This survey was conducted by the NOAA Southwest Fisheries Science Center aboard the NOAA Ship McArthur II for a total of approximately 12,800 kilometers surveyed from late July to the end of November 2008. This dataset provides the time-date and geographical coordinates, by species/stock, of all cetaceans detected during the survey, as well as the daily and intra-daily start and end points of the line-transect survey.
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Purpose
The primary purpose of this survey was to estimate the abundance of and to describe the distribution of dolphins, whales, and porpoises off the west coast of the United States out to 300 nautical miles.
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Supplemental information
[2021-04-13] Updated with additional attributes.
SWFSC MMTD Cruise Number: 1635 Perpendicular distance will be released upon permission by the contributor. Please contact the contributor if needed.
Attribute descriptions for effort data: dist: Length of the segment (km) Mode: Effort mode type (C = closing mode; P = passing mode)
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References
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Attributes
Overview
This section explains attributes included in the original dataset.
OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/lon and
species names/counts only.
Should you need other attributes described here, you are encouraged to contact the data
provider.
Attributes described below represent those in the original dataset provided by the provider.
All attributes are included in the downloadable file (CSV or ESRI File Geodatabase) for "Complete Set of Dataset".
Attributes in dataset
Attribute (table column) | Description |
oid | Unique ID number (generated by OBIS-SEAMAP) |
event | S = marine mammal sighting; t = sea turtle sighting; p = pinniped sighting |
datetime | Date and time of sighting (local time) |
lat | Latitude (decimal degrees) of vessel when sighting was made |
lon | Longitude (decimal degrees) of vessel when sighting was made |
cruise | SWFSC Marine Mammal and Turtle Divison Cruise number |
sightno | Sighting number (within Cruise) |
nsp | Number of species observed in the sighting |
mixed | TRUE for a multi-species sighting (nSp >= 2); FALSE otherwise (nSp = 1) |
spcode | Species code |
sp_tsn | Taxonomic Serial Number added by OBIS-SEAMAP |
gsspbest | The mean of all observers |
gssphigh | The mean of all observers |
gssplow | The mean of all observers |
perpdistkm | Perpendicular distance (km) to sighting from trackline; Available upon permission. |
bft | Beaufort sea state, as assessed by looking upswell with the naked eye. |
swellhght | Average swell height from trough to crest of typical swells (estimated in feet, by eye) |
vis | A measure of air/atmospheric clarity |
groupsize_sightno | Running count ID of all cetacean groups recorded (should be same as SightNo) |
groupsize_count | Number of observers that provided a group size estimate (for calculating GsSpBest) for S events. |
groupsize_count_obs | Number of unique observer codes per sighting for S events |
geom | Geometry field added by OBIS-SEAMAP |
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OBIS-SEAMAP ID | 1065 |
Seabirds | 0 |
Marine mammals | 903 |
Sea turtles | 0 |
Rays and sharks | 0 |
Other species | 0 |
Non spatial | 0 |
Non species | 0 |
Total | 903 |
Date, Begin | 2008-07-29 |
Date, End | 2008-11-30 |
Temporal prec. | 111111 |
Latitude | 30.28 - 48.34 |
Longitude | -131.00 - -117.30 |
Coord. prec. | 6 decimal digits |
Platform | Boat |
Data type | Animal sighting |
Effort | YES (ID: 1066) |
if ($show_effort_stat) {
?>
Traveled (km) | 12,771 |
Effort hours | 700 |
}
if ($sources != null and $sources != "" and $dataset_id != 427) { // Do not show ESAS
?>
Contr. through | |
}
?>
Registered | 2013-12-03 |
Updated | 2021-04-29 |
Status | Published |
Sharing policy |
CC0 no rights reserved |
Shared with |
OBIS
GBIF (via DOI) |
See metadata in static HTML |
See metadata in FGDC XML |
See download history / statistics |
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