Ibcao Bathymetry Data

Ikka Fjord

Emodnet Dataset ID (LID)

0000045102

id

7116

Dataset name

Ikka Fjord

File name

20220331/Ikka_MBES_10m_UTM22N.tif

Data format

geotiff

File size

226307

Dataset version

2

Seabed source ID (SID)

1402

Seabed data category (TID)

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

Included in IBCAO gridding

No (code 0)

Data restriction

by negotiation

Cruise name

Ikka 2019

Cruise ID

0

Chief scientist

Seaman, Paul

Start date

2019-06-21

End date

2019-06-23

Date format

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

Originator centre

Paul Seaman, independent geophysicist

Data provider

Canadian Hydrographic Service (CHS)

Station name

SIKU

Instrument

multi-beam echosounders

Instrument specified

NORBIT iWBMSh

Positioning system type

Kinematic Global Positioning System receivers

Positioning system model

Trimble Applanix POSMV; Trimble RTK R9 (base) and R7 (rover)

Spatial reference system

EPSG:32622

Horizontal resolution

10

IBCAO gridding Remove and Restore resolution

100

Abstract

New multibeam mapping of the Ikka fjord, SW Greenland, shows 938 individual ikaite columns. In the up to 29 m deep fjord, columns 0.5 - 20 m in height above the seafloor grow up to the halocline 2-4 m from the water surface. The columns grow from carbonate saturated high-pH ground water seepages through faults in the cabonatite-syenite bedrock, where ikaite precipitates as the ground water mixes with Mg-rich sea water in temperatures <7° C.