Grid Images - Horizon Data (BHP) Hydrocarbon Migration and Seepage in the Timor Sea and Browse Basin. An Integrated SAR and Geological Study GIS.

Note: This metadata describes the dataset in accordance with the ANZLIC (Australia New Zealand Land Information Council) Core Metadata Guidelines Version 2.

[back to top]

Dataset citation

ANZLIC unique identifier: ANZCW0703003370

Title: Grid Images - Horizon Data (BHP) Hydrocarbon Migration and Seepage in the Timor Sea and Browse Basin. An Integrated SAR and Geological Study GIS.

[back to top]

Custodian

Custodian: Geoscience Australia

Jurisdiction: Australia

[back to top]

This seismic interpretated data was originally from BHP. The original data was interpretated from a BHP 3D survey over their selected permit area, the survey was called "HV11". The data was then given to AGSO for extra project purposes. AGSO has full right to this data.

The history of the data before it arrived in AGSO is unknown.

All the data is in raster format and displays the interpetated grids from the survey. They are all time structure grids.

ANZLIC search words:

ENERGY Petroleum Exploration
GEOSCIENCES Geology Mapping
INDUSTRY Surveys
MARINE Maps

Spatial domain:

locality map

Geographic extent name: AUSTRALIA INCLUDING EXTERNAL TERRITORIES - AUSAAT - Australia - Australia

Geographic extent polygon: 121 -8.7, 127.5 -8.7, 127.5 -17, 121 -17, 121 -8.7,

Note: The format for each Geographic extent name is: Name - Identifier - Category - Jurisdiction (as appropriate) See GEN Register

Geographic bounding box:: North bounding latitude: -8.7 °; South bounding latitude: -17 °; East bounding longitude: 127.5 °; West bounding longitude: 121 °

[back to top]

Data currency

Beginning date: 2000-07-01

Ending date: 2000-11-05

[back to top]

Dataset status

Progress: Complete

Maintenance and update frequency: Not Known

[back to top]

Access

Stored data format:: DIGITAL - bil Band interleaved by line (BIL) image Geographic WGS84

Available format type:: DIGITAL - bil Band interleaved by line (BIL) image Geographic WGS84

Access constraints:

Licence required

Free Data Download

[back to top]

Data quality

Lineage:

The original data was imported into ERMAPPER format. Where there were converted into a format that ARCVIEW could read, BIL files. In ERMAPPER the grids where modified only by there colour spread. The colour table used for all grids was, 'rainbow_reversed'.

There BIL images represents the depth in two-way-time (TWT) of selected interpretated horizons. They can only be used for general usage, for they have no data attached to them, they are only georeferenced images. All images have been given the 3-D look, this has only been done for asthetic looks.

Positional accuracy:

Because the data come from an external source the data should only be reprented at a scale greater than 1:1000000. Any lower than that might distort the accuracy levels.

All the raster images have a cell size of 20m. After the georeferencing of the images in ERMAPPER a positional accuracy can be 'estimated' within 50m. Each raster BIL file has a 'hdr' file. This is used to georeference the raster image.

Attribute accuracy:

This naming of the horizons was up to the interpreter in BHP and is therefore not prone to any error.

The classification of the horizon names are as follows:

All 'original' values were in two-way time (TWT).

32amp - Amplitude (32)

bmio - Base Miocene

call - Callovian

itri - Intra Triassic

ival - Intra Valanginian

ljur - Late Jurassic

lvel - Intra

sant -