AusBathyTopo (Torres Strait) 30m 2023 - A High-resolution Depth Model (20230006C)

Authors / CoAuthors

Beaman, R.

Abstract

The Australian Bathymetry and Topography (AusBathyTopo) Torres Strait dataset contains depth and elevation data compiled from all available data within the Torres Strait into a 30 m-resolution Digital Elevation Model (DEM). The Torres Strait lies at the northern end of the Great Barrier Reef (GBR), the largest coral reef ecosystem on Earth, and straddles the Arafura Sea to the west and the Coral Sea to the east. The Torres Strait area is bounded by Australia, Indonesia and Papua New Guinea. Bathymetry mapping of this extensive reef and shoal system is vital for the protection of the Torres Strait allowing for the safe navigation of shipping and improved environmental management. Over past ten years, deep-water multibeam surveys have revealed the highly complex continental slope canyons in deeper Coral Sea waters. Shallow-water multibeam surveys conducted by the US-funded Source-to-Sink program revealed the extensive Fly River delta deposits. Airborne LiDAR bathymetry acquired by the Australian Hydrographic Office cover most of the Torres Strait and GBR reefs, with coverage gaps supplemented by satellite derived bathymetry. The Geoscience Australia-developed National Intertidal DIgital Elevation Model (NIDEM) improves the source data gap along Australia’s vast intertidal zone. We acknowledge the use of the CSIRO Marine National Facility (https://ror.org/01mae9353 ) in undertaking this research.” The datasets used were collected by the Marine National Facility on 13 voyages (see Lineage for identification). All source bathymetry data were extensively edited as point clouds to remove noise, given a consistent WGS84 horizontal datum, and where possible, an approximate MSL vertical datum. The 30 m-resolution grid is a fundamental dataset to underpin marine habitat mapping, and can be used to accurately simulate water mixing within a whole-of-GBR scale hydrodynamic model. This dataset is not to be used for navigational purposes.

Product Type

dataset

eCat Id

144348

Contact for the resource

Point of contact

Commonwealth of Australia (Geoscience Australia)
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia

Owner

Commonwealth of Australia (Geoscience Australia)
Cnr Jerrabomberra Ave and Hindmarsh Dr
GPO Box 378
Canberra
ACT
2601
Australia

Principal investigator

Point of contact

Contact instructions: Place and Communities

Resource provider

Digital Object Identifier

https://dx.doi.org/10.26186/144348

Keywords

HVC_146413

( Project )

AusSeabed

bathymetry

bathymetry grid

marine data

continental shelf

elevation

SRTM

Lidar bathymetry

( Instrument )

Compilation

( Instrument )

Multibeam

( Instrument )

Singlebeam

( Instrument )

LiDAR

( Instrument )

SeisDB

( Instrument )

Satellite-derived Bathymetry

( Instrument )

Chart-derived

theme.ANZRC Fields of Research.rdf

EARTH SCIENCES

GCMD Keywords

Earth Science | Oceans | Bathymetry/Seafloor Topography | Bathymetry

Published_External

Publication Date

2023-10-23T21:47:58

Creation Date

2020-02-07T00:00:00

Security Constraints

Australian Government Security ClassificationSystem

Classification - unclassified

Legal Constraints

Creative Commons Attribution 4.0 International Licence

Use - license otherRestrictions

Status

Purpose

Not to be used for navigational purposes. This project aimed to develop a new high-resolution digital elevation model (DEM) for the Torres Strait at a grid pixel resolution of 0.0003-arc degree (about 30 m). A high-resolution DEM is a critical 3D dataset required to accurately simulate water mixing and current flow within a whole-of-GBR scale hydrodynamic model. In addition, a new grid is required to improve the geomorphic detail about the location and spatial extent of seabed features for the Torres Strait, Arafura Sea and Coral Sea region. The new grid utilised the latest data sourced from ship-based multibeam and singlebeam echosounder surveys, airborne LiDAR bathymetry surveys, and satellite derived bathymetry data. This dataset is published with the permission of the CEO, Geoscience Australia

Maintenance Information

asNeeded

Topic Category

geoscientificInformation

Series Information

Lineage

Data file description: FILE: ts30_29sep PROJECTION: Geographic Latitude/Longitude DATUM: WGS84 SCALE: 0.0003*0.0003 arc-degree (about 30 m) grid cells STORED DATA FORMAT: ESRI raster grid AVAILABLE DATA FORMATS: floating point geotiff Spatial Extent: NORTH LATITUDE: -8.0 SOUTH LATITUDE: -13.0 WEST LONGITUDE: 139.0 EAST LONGITUDE: 146.0 HORIZONTAL DATUM: WGS84 ESRI raster Top : -8.00003888891 ESRI raster Left : 138.999983697 ESRI raster Right : 145.999883697 ESRI raster Bottom: -13.0001388889 ESRI raster Columns: 23333 ESRI raster Rows : 16667 ESRI raster Cell Size X, Y: 0.0003, 0.0003 Cell-registered, showing coordinates for edge of cells Vertical extent: MINIMUM HEIGHT: -3675 m MAXIMUM HEIGHT: 546 m VERTICAL DATUM: approximates mean sea level (MSL) Data limitations: AUSTRALIAN HYDROGRAPHIC OFFICE NOTICE: Not to be used for navigation. This ts30 DEM product incorporates source bathymetry data reproduced under licence by permission of the Australian Hydrographic Office © Commonwealth of Australia 2009-2023. GEOSCIENCE AUSTRALIA NOTICE: This ts30 DEM product incorporates data which are © Commonwealth of Australia (Geoscience Australia). The Commonwealth gives no warranty regarding the data's accuracy, completeness, currency or suitability for any particular purpose. This dataset has been compiled from a wide range of data sources of varying resolution and accuracy Credits and funding: CSIRO ACKNOWLEDGEMENT: We acknowledge the use of the CSIRO Marine National Facility (https://ror.org/01mae9353 ) in undertaking this research.” The 13 datasets used were collected by the Marine National Facility on voyages: • SS2006_T01; SS2008_V09; SS2013_T03; SS2012_T07; • IN2017_T01; IN2019_E01; IN2019_E01; IN2019_T02; IN2019_T02; IN2021_T01; IN2021_T01; IN2022_T01; IN2022_T01 Sheriden Morris (Reef & Rainforest Research Centre) Phillippa Bricher (Australian Hydrographic Office) Anne Worden (Australian Hydrographic Office) Michael Andrew (Australian Hydrographic Office) Nigel Townsend (Australian Hydrographic Office) Mark Alcock (Geoscience Australia) Duncan Moore (Geoscience Australia) Kim Picard (Geoscience Australia) Aero Leplastrier (Geoscience Australia) Scott Nichol (Geoscience Australia) Justy Siwabessy (Geoscience Australia) Michele Spinoccia (Geoscience Australia) Michal Wenderlich (Geoscience Australia) Emma Hickerson (Geoscience Australia) Natalie Lennard (Geoscience Australia) Emma Johnson (Geoscience Australia) Cisco Navidad (CSIRO) Amy Nau (CSIRO) Please see the Datasources_ts30_DEM_V1 sheet in the downloads section for more information on contributing surveys noting that a considerable portion of the data for this project came from the AHO and will not be individually identified. FUNDING: Queensland Government Smart Futures Fellowship Reef and Rainforest Research Centre James Cook University Geoscience Australia National Environmental Science Program Qld Dept of Environment and Heritage Protection Resource Constraints and licensing: COPYRIGHT: The content on this website is released under the Creative Commons Attribution 4.0 International Licence: https://creativecommons.org/licenses/by/4.0/ ATTRIBUTION: “Australian Hydrographic Office, Geoscience Australia” Going forward it is intended that this resource will be updated intermittently when resources allow and as new foundational data becomes available.

Parent Information

Extents

[-13.00, -8.00, 139.00, 146.00]

Reference System

Spatial Resolution

30m

Service Information

Associations

Downloads and Links

Australian Bathymetry Topography (Torres Strait) 2023 30m (zip) [1.43 GB]

Source Information