Ibcao Bathymetry Data

stevens

Emodnet Dataset ID (LID)

0000145302

id

10031

Dataset name

stevens

File name

20230303/stevens-3996.xyz

Data format

xyz (tsv)

File size

1561694

Dataset version

2

Seabed source ID (SID)

1499

Seabed data category (TID)

Singlebeam — depth value collected by a single beam echo-sounder (code 10)

Included in IBCAO gridding

Yes (code 1)

IBCAO gridding layer weight

10

Cruise ID

0

Chief scientist

Stevens, Laura A.

Originator centre

National Science Foundation; Woods Hole Oceanographic Institution

Data provider

University of California Irvine Department of Earth System Science

Spatial reference system

EPSG:3996

Horizontal resolution

3.32707

IBCAO gridding Remove and Restore resolution

100

Abstract

Measurements of near-ice hydrography and near-terminus subglacial hydrology are lacking, due in large part to the difficulty in working at the margin of calving glaciers. In this study we pair detailed hydrographic and bathymetric measurements collected with an autonomous underwater vehicle as close as 150 m from the ice–ocean interface of the Saqqarliup sermia–Sarqardleq Fjord system, West Greenland, with modeled and observed subglacial discharge locations and magnitudes. We find evidence of two main types of subsurface glacially modified water (GMW) with distinct properties and locations. The two GMW locations also align with modeled runoff discharged at separate locations along the grounded margin corresponding with two prominent subcatchments beneath Saqqarliup sermia. Thus, near-ice observations and subglacial discharge routing indicate that runoff from this glacier occurs primarily at two discrete locations and gives rise to two distinct glacially modified waters. Furthermore, we show that the location with the largest subglacial discharge is associated with the lighter, fresher glacially modified water mass. This is qualitatively consistent with results from an idealized plume model.

URL

https://tc.copernicus.org/articles/10/417/2016/

Operator who enters this information

marcus

File creation time

2021-03-05 12:07:29+00

Metadata modification time

2023-09-11 12:07:28.07664+00

Bounding box

POLYGON((-1807526.49916501 -1496816.93461644,-1807526.49916501 -1479561.54323203,-1795765.2182386 -1479561.54323203,-1795765.2182386 -1496816.93461644,-1807526.49916501 -1496816.93461644))

Color

#3ca9cd

preprocess

https://git.bolin.su.se/rez/seabed2030-preprocess/-/blob/master/bedmachine_new_sources.py

Ibcao data status

processing

Processing status

Check if data needs cleaning.

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