Ibcao Bathymetry Data

skq201713s

Emodnet Dataset ID (LID)

0000142110

id

10415

Dataset name

skq201713s

File name

20231018/skq-201713s-2017-250m-3996.xyz

Data format

xyz (tsv)

File size

1384102

Dataset version

10

Seabed source ID (SID)

1367

Seabed data category (TID)

Multibeam — depth value collected by a multibeam echo-sounder (code 11)

Included in IBCAO gridding

Yes (code 1)

IBCAO gridding layer weight

1000

Data restriction

by negotiation

Shape

surface

Cruise name

SKQ201713S

Cruise ID

0

Cruise report

https://www.polartrec.com/files/resources/docs/Ashjian_2017_collaborativereport.pdf

Chief scientist

Ashjian, Carin

Start date

2017-08-25

End date

2017-09-18

Date format

Only date, no time (code Y-m-d)

From harbour

Nome, Alaska

To harbour

Nome, Alaska

Originator centre

Rolling Deck to Repository

Data provider

National Oceanic and Atmospheric Administration, National Centers for Environmental Information

Platform class

research vessel

Station name

RV Sikuliaq

Station id

WDG7520

Instrument

multi-beam echosounders

Instrument specified

Kongsberg EM710

Spatial reference system

EPSG:3996

Horizontal resolution

250

IBCAO gridding Remove and Restore resolution

250

Abstract

The Beaufort Sea shelf break experiences frequent upwelling of deep, nutrient rich basin water onto the shelf. Such upwelling is not only a short-term source of heat, salt, and nutrients, and a mechanism promoting elevated primary production (production response), but it also transports populations between ocean regions and depth strata/regimes (physical response), potentially modifying ecosystem structure and availability of zooplankton and fish prey to upper trophic level consumers. Historically, the Beaufort Sea shelf break has been a domain of enhanced abundance of beluga whales, presumably in response to elevated availability of their prey. This project sought to explore and identify the mechanisms linking broad-scale atmospheric forcing, ocean physical response, prey-base condition and distribution, upper trophic level animal aggregations, and climate change along the Beaufort Shelf break. Our overarching hypothesis is that atmospherically-forced (wind-induced) upwelling along this shelf break leads to enhanced feeding opportunities for intermediate links in the pelagic ecosystem (zooplankton, forage fish) that in turn sustain the exploitation of this environment by animals such as beluga whales, seabirds, and seals. Seven supporting hypotheses further explore and support the overarching hypotheses.

URL

https://www.ngdc.noaa.gov/ships/sikuliaq/SKQ201713S_mb.html

Database reference

NOAA NCEI

Operator who enters this information

marcus

File creation time

2023-10-18 09:07:11+00

Metadata modification time

2023-10-23 12:25:46.76882+00

Bounding box

POLYGON((-1082625 1769875,-1082625 2772125,-483875 2772125,-483875 1769875,-1082625 1769875))

Color

#be4633

preprocess

cat NOAA-*-files.csar.txt | perl -pe 's/ I:\\Qimera\\IBCAO_4.2\\XYZ\\NOAA files\\(.+).$//; if ($1) { open(STDOUT, ">>" . $1) || die $!; } else { open(STDOUT) }'

Ibcao data status

done

Supplementary data

20220422/20220422.zip

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