Calving data from a lacustrine margin of Russell Glacier, west Greenland between July 2014 and September 2015

A record of subaerial calving activity at a lacustrine margin of Russell Glacier, west Greenland, comprising 290 calving events classified by volume, area and calving mechanism. Data were acquired continuously from July 2014 to September 2015 using an array of time-lapse cameras. Imagery from the cameras was employed to generate a time-series of ice-margin point clouds, which were then differenced to determine calving properties. The dataset is designed to facilitate the analysis of seasonality in lacustrine calving processes. Supplementary point clouds were also generated to investigate the effects of two lake drainage events on calving processes in the summers of 2014 and 2015. Point cloud parameters and a record of lake stage are also included. The dataset was collected and processed by researchers in the School of Geography at the University of Leeds.

Funding was provided by Royal Institute of Chartered Surveyors Research Trust (project number 474), The Mount Everest Foundation, The Gilchrist Educational Trust, and Sigma Xi.

Date (Creation): 2020-03-06

Date (Revision): 2020-03-06

Date (Publication): 2020-03-06

Date (released): 2020-03-06

Edition: 1.0

Unique resource identifier: https://doi.org/10.5285/5cc71534-7f97-4974-8271-d407f1188e2f

Codespace: doi

Unique resource identifier: GB/NERC/BAS/PDC/01314

Codespace: https://data.bas.ac.uk/

Other citation details: Please cite this item as: Mallalieu, J. (2020). Calving data from a lacustrine margin of Russell Glacier, west Greenland between July 2014 and September 2015 (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/5cc71534-7f97-4974-8271-d407f1188e2f

Credit: No credit.

Status: Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
University of Leeds	Mallalieu, Joseph		Author
NERC EDS UK Polar Data Centre		PDCServiceDesk@bas.ac.uk	Point of contact

Maintenance and update frequency: As needed

Maintenance note: Completed

Global Change Master Directory (GCMD) Science Keywords

Theme

Calving
Greenland ice sheet
Russell Glacier
ice-marginal lake

Place

Russell Glacier, Qeqqata municipality Greenland

GEMET - INSPIRE themes, version 1.0

Access constraints: Other restrictions

Other constraints: no limitations to public access

Access constraints: Other restrictions

Other constraints: no limitations

Use constraints: License

Other constraints: Open Government Licence v3.0

Use constraints: Other restrictions

Other constraints: Data released under Open Government Licence V3.0:

Unique resource identifier: url

Codespace: url

Association Type: Cross reference

Spatial representation type: Text, table

Language: English

Character set: UTF8

Topic category

Environment
Geoscientific information
Inland waters

Begin date: 2014-06-27

End date: 2015-09-20

Vertical extent

Minimum value: 405.0

Maximum value: 450.0

Vertical CS

No information provided.

Vertical datum

No information provided.

Supplemental Information: It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.

Title: European Petroleum Survey Group (EPSG) Geodetic Parameter Registry

Date (Publication): 2008-11-12

Cited responsible party

Organisation name	Individual name	Electronic mail address	Role
European Petroleum Survey Group		EPSGadministrator@iogp.org	Publisher

Unique resource identifier: urn:ogc:def:crs:EPSG::3031

Version: 6.18.3

Distributor

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
NERC EDS UK Polar Data Centre		PDCServiceDesk@bas.ac.uk	Distributor

Distributor format

Name	Version
text/plain
text/csv

Units of distribution: bytes

Transfer size: 40960

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=5cc71534-7f97-4974-8271-d407f1188e2f	Get Data

Units of distribution: bytes

Transfer size: 40960

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=5cc71534-7f97-4974-8271-d407f1188e2f	Get Data

Hierarchy level: Dataset

Statement: Methodology:

Data were derived from a time-series of point clouds of ice-margin topography. The point clouds were generated at 24 hour to 28 day intervals by using Structure-from-Motion techniques to process discrete image sets acquired from between 7-15 time-lapse cameras. Successive point clouds were co-registered and differenced to quantify calving properties. Classification of calving mechanisms was based on geometric changes at the ice-margin, interpretation of camera imagery pre- and post-calving, and existing calving categorisations. Full details of camera installation and point cloud processing are included in the following:

Mallalieu et al. 2017 An integrated Structure-from-Motion and time-lapse technique for quantifying ice-margin dynamics. Journal of Glaciology, 63(242), 937-949. doi:10.1017/jog.2017.48

Mallalieu, J., Carrivick, J. L., Quincey, D. J., & Smith, M. W.. (2020). Calving seasonality associated with melt-undercutting and lake ice cover. Geophysical Research Letters, 47, e2019GL086561. https://doi.org/10.1029/2019GL086561

Data collection:

Time-lapse camera imagery was acquired by LtL Acorn 5210A trail cameras. Ground Control Points were surveyed using a Leica System 500 dGPS. Camera imagery was processed in Agisoft Photoscan Professional v.1.2.5 to generate point clouds. Point clouds were co-registered, differenced and analysed in CloudCompare v.2.7.

Resolution: Point cloud densities range from 18-37 pts m2

Data quality:

Point cloud quality varies throughout the survey due to the nature of the time-lapse camera setup. Please see the dataset for parameters of individual point clouds, including: georeferencing RMSE; point cloud size; point cloud density; number of ground control points; and number of aligned cameras. Variability in the sampling interval between successive clouds was due to inclement weather conditions.

Metadata

File identifier: 5cc71534-7f97-4974-8271-d407f1188e2f XML

Metadata language: English

Character set: UTF8

Hierarchy level: Dataset

Hierarchy level name: dataset

Date stamp: 2020-03-06

Metadata standard name: ISO 19115 Geographic Information - Metadata

Metadata standard version: ISO 19115:2003(E)

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NERC EDS UK Polar Data Centre		polardatacentre@bas.ac.uk	Point of contact

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