Annual diatom abundance and diversity from the Jurassic ice core, Antarctic Peninsula (1873-2012 CE)

This dataset provides information on the annual abundance and diversity of diatoms preserved in ice layers from a Jurassic ice core that was drilled in 2012 from the Southern West Antarctic Peninsula. The diatom record spans the entire depth of the ice core (0-140 meters) and represents the interval from 1873 to 2012 CE. Meltwater from the annual layers of the ice core was filtered, and the filters were analyzed using a scanning electron microscope for the identification and classification of diatoms. This dataset was utilized to reconstruct past changes in the westerly winds of the Southern Hemisphere, with the results presented in Tetzner et al. (2025).

Funding:

This research was funded by CONICYT-Becas Chile and Cambridge Trust funding programme for PhD studies under grant number 72180432.

Date (Creation): 2025-05-27

Date (Revision): 2025-05-27

Date (Publication): 2025-05-27

Date (released): 2025-05-27

Edition: 1.0

Unique resource identifier: https://doi.org/10.5285/371f680f-2c0b-4558-9a85-12aa8722be7e

Codespace: doi

Unique resource identifier: GB/NERC/BAS/PDC/02064

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

Other citation details: Please cite this item as: Tetzner, D., Allen, C., Thomas, E., Wolff, E., & Franzke, C. (2025). Annual diatom abundance and diversity from the Jurassic ice core, Antarctic Peninsula (1873-2012 CE) (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/371f680f-2c0b-4558-9a85-12aa8722be7e

Credit: No credit.

Status: Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Antarctic Survey	Tetzner, Dieter		Author
British Antarctic Survey	Allen, Claire		Author
British Antarctic Survey	Thomas, Elizabeth		Author
University of Cambridge	Wolff, Eric		Author
Pusan National University	Franzke, Christian		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

Antarctica
Southern Hemisphere Westerly Winds
diatoms
ice core

Place

Southern West Antarctic Peninsula Antarctica

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 supplied under Open Government Licence v3.0

Use constraints: Other restrictions

Other constraints: No restrictions apply.

Unique resource identifier: url

Codespace: url

Association Type: Cross reference

Spatial representation type: Text, table

Language: English

Character set: UTF8

Topic category

Climatology, meteorology, atmosphere

Begin date: 1873-01-01

End date: 2012-12-31

Vertical extent

Minimum value: 1139.0

Maximum value: 1139.0

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/csv

Units of distribution: bytes

Transfer size: 20480

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=371f680f-2c0b-4558-9a85-12aa8722be7e	Get Data

Hierarchy level: Dataset

Statement: Methodology:

The Jurassic ice core was drilled in the austral summer 2012/2013 CE to a depth of 140m using the British Antarctic Survey (BAS) electromechanical, 104 mm diameter drill. An ice chronology was established for this core based on the annual cycles of hydrogen peroxide (H2O2) and the non-sea salt component of sulphate (nssSO42-). The estimated dating error was <+/-7 months for each year and with no accumulated error. Diatom samples were obtained by filtering meltwater from annual layers of the Jurassic ice core. Jurassic ice core meltwater was filtered through 1.0 micro-meter pore size filters, which were later imaged using a Quanta-650F Scanning Electron Microscope (SEM) at the Earth Sciences Department, University of Cambridge. Diatom identification and ecological associations were based on published Southern Ocean databases and references therein (Armand et al., 2005; Hasle and Syvertsen, 1997; Cefarelli et al., 2010; Zielinski and Gersonde, 1997).

Data collection:

Quanta-650F Scanning Electron Microscope (SEM) at the Earth Sciences Department, University of Cambridge.

Data quality:

Diatom samples were processed and analysed according to the methods and constraints outlined in Tetzner et al. (2021) and Tetzner et al. (2025). Annual layer meltwater from Jurassic ice core was filtered using polycarbonate membrane filters with a pore diameter of 1.0 ?m. After filtration, the filters were scanned using a Scanning Electron Microscope (SEM). One-third of the filter area was scanned, in line with the observations from Tetzner et al. (2021) and Tetzner et al. (2025), which noted that diatoms tend to have a homogeneous spatial distribution when the counts over one-third of the filter area are six or more. The main diatom assemblage composition was established from the identified species and groups with abundances higher than 2.0% of the whole assemblage.

Metadata

File identifier: 371f680f-2c0b-4558-9a85-12aa8722be7e XML

Metadata language: English

Character set: UTF8

Hierarchy level: Dataset

Hierarchy level name: dataset

Date stamp: 2025-05-27

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

Overviews

Spatial extent

Provided by

Access to the catalogue

Read here the full details and access to the data.

Simple