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Data for: Modelling ocean wave transfer to Ross Ice Shelf flexure

A mathematical model (Bennetts and Meylan, 2021, doi.org/10.1137/20M13851) has been used to make predictions of ocean wave transfer to Ross Ice Shelf flexure. The transfer is considered along transects of the Ross Ice Shelf and adjoining open ocean, where the ice shelf thickness and seabed profiles along the transects are sampled from the Bedmap2 dataset (Fretwell et al, 2013, doi.org/10.5194/tc-7-375-2013). Our dataset consists of MAT-files, where each file is for a particular transect and holds two structures: 'data_I' as input data and 'data_o' for the model output data.

The input data are the profiles from Bedmap2: 'thick' is the shelf thickness, 'draft' is the shelf draught; and 'bed' is the seabed elevation. They are all in vector form with 2001 sample points along the shelf, which was found to give model outputs accurate to 95%. The input data also contains: a 1x2 vector 'L_vec', for which the first entry is the shelf length, and the second entry is the length of the adjoining open ocean, where both values are in metres; and a 1x2 vector 'Int_vec', for which the first entry is the total number of sample points (ocean + shelf) and the second entry is the number of points in the shelf only.

The output date are the three matrices where the rows correspond to different wave period and columns are distances along the transect: 'eta_w' is the water displacement (dimensionless); 'eta_s' is the shelf displacement (dimensionless); and 'str' is the flexural shelf strain (1/metres). All three outputs are normalised by the incident amplitude, noting that the model is linear. The output data also contains: a 1x300 vector containing the wave periods 'T', which are log-spaced between 10s and 1000s.

The data are divided into two folders: validation/ and transects/. The first group (validation/) are used to validate the model predictions against the observations of Chen et al (Geophysical Research Letters, 2019, doi.org/10.1029/2019GL084123) close to 2 km away from the shelf front, where the results of Chen et al (2019) have been digitised and are contained in 'Chen_paper.mat'. The second group (transects/) can be used to study transfer over a 500km wide region of the Ross Ice Shelf. There are 101 transects with 5 km spacing.

We also analysed the shelf displacement and strain over different wave periods at 10 km away from shelf front for all transects to investigate the relations between strain and wave period, these data

have stored in 'Transfer_function_x_10km.mat'.

Three MATLAB scripts (Fig1.m, Fig2.m, Fig3.m) are included to recreate results from Bennetts et al (submitted). Fig1.m produces plots from observation (Chen et al) and our models. Fig2.m performs strain transfer function analysis for different profiles and Fig3.m generate the strain map and selected region of Ross Ice Shelf for given incident ocean wave. For Fig1.m, it requires “Bedmap2 Toolbox for Matlab” to access the bedmap2 for producing Ross Ice Shelf on the Antarctica map. A link to download this software will be stated in the MATLAB scripts.


An updated dataset was provided on 2022-10-25.

Simple

Identification info

Alternate title
Data for: Modelling ocean wave transfer to Ross Ice Shelf flexure
Date (Publication)
2022-10-26
Edition
2
Citation identifier
Dataset DOI

Title
Information and documentation - Digital object identifier system
Date (Publication)
2012-04-23
Citation identifier
ISO 26324:2012

Citation identifier
doi:10.26179/ykvz-mb45

Originator

Bennetts, L., Pitt, J. and Liang, J.

Publisher

Australian Antarctic Data Centre

Principal investigator

BENNETTS, LUKE
School of Mathematical Sciences
University of Adelaide
Adelaide
SA
5005
Australia

Principal investigator

PITT, JORDAN
University of Adelaide
Adelaide
SA
5005
Australia

Collaborator

BENNETTS, LUKE
School of Mathematical Sciences
University of Adelaide
Adelaide
SA
5005
Australia

Collaborator

LIANG, JIE
University of Adelaide
Adelaide
SA
5005
Australia
Name
CAASM Metadata
Website
https://data.aad.gov.au/metadata/records/AAS_4528_RIS

Purpose
To predict Ross Ice Shelf flexure in response to ocean wave forcing.
Status
Completed

Custodian

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia
+61 3 6232 3244
+61 3 6232 3351 (facsimile)

Spatial resolution

Spatial resolution
1

Spatial resolution

Vertical sampling distance
5
Topic category
  • Oceans

Extent

N
S
E
W


Extent

Description
Temporal Coverage

Temporal extent

TimePeriod
2021-03-01 2022-04-01
NASA/GCMD Earth Science Keywords
  • EARTH SCIENCE > OCEANS > OCEAN WAVES > GRAVITY WAVES
  • EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > ICE SHEETS
  • EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > ICE SHEETS > ICE SHEET MEASUREMENTS
Keywords
  • ICE SHELF FLEXURE
  • ICE SHELF STRAIN
  • ICE SHELF DISPLACEMENT
NASA/GCMD Earth Science Keywords
  • Computer > Computer
NASA/GCMD Earth Science Keywords
  • MODELS
NASA/GCMD Earth Science Keywords
  • AMD/AU
  • AMD
  • CEOS
NASA/GCMD Earth Science Keywords
  • GEOGRAPHIC REGION > POLAR
  • OCEAN > SOUTHERN OCEAN
  • CONTINENT > ANTARCTICA > ROSS ICE SHELF

Resource constraints

Use limitation
This metadata record is publicly available.

Resource constraints

Access constraints
licence
Other constraints
These data are publicly available for download from the provided URL.

Resource constraints

File type
Portable Network Graphic
Linkage
Creative Commons by Attribution logo

Title
Attribution 4.0 International (CC BY 4.0)
Website
https://creativecommons.org/licenses/by/4.0/legalcode

Legal code for Creative Commons by Attribution 4.0 International license

Use constraints
licence
Other constraints
This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4528_RIS when using these data.
Language
English
Character encoding
UTF8

Distribution Information

Distributor

Distributor

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia
+61 3 6232 3244
+61 3 6232 3351 (facsimile)

Distributor

Fees
Free
Planned available datetime
2022-10-26T00:00:00
Units of distribution
GB
Transfer size
9.8
Distribution format
  • Matlab

OnLine resource
GET DATA > DIRECT DOWNLOAD

Download the dataset.

OnLine resource
PROJECT HOME PAGE

Public information for AAS project AAS_4528

OnLine resource
VIEW RELATED INFORMATION

Citation reference for this metadata record and dataset.

Maintenance and update frequency
As needed
Maintenance note
2022-08-09 - record created by Jie Liang. 2022-08-17 - record updated by Dave Connell to correct the spatial coverage. 2022-08-18 - record updated by Dave Connell to correct the spatial coverage. 2022-08-18 - record updated by Dave Connell to publicly release the data. 2022-10-26 - record updated by Dave Connell after a data update was provided by Jie Liang.

Metadata

Metadata identifier
string/AAS_4528_RIS

Language
English
Character encoding
UTF8

Author

LIANG, JIE
University of Adelaide
Adelaide
SA
5005
Australia

Sponsor

Australian Antarctic Division

Owner

AADC

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
1e30b9d8-229a-4681-834c-ebdd1f489c25

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Date (Last Revision)
2022-10-26T10:14:31

Identifier

Description
metadata.extraction_date

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
8.6

Metadata linkage
http://data.aad.gov.au/metadata/records/AAS_4528_RIS

Point of truth for the metadata record

Date info (Creation)
2022-08-09T00:00:00
Date info (Last Update)
2022-10-25

Metadata standard

Title
ISO 19115-3
Edition
2014
Other citation details
Version 1
Title
DIF to ISO 19115-1 Profile
 
 

Overviews

Spatial extent

N
S
E
W


Keywords


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