Project 121.30: Seismic Survey of the Southern Lord Howe Rise, 1992

3191 km of multichannel seismic data was acquired in November 1992 to investigate the geological framework of a key seabed boundary zone between Australia and New Zealand. The survey, conducted by the Australian Ocean Data Network, aimed to define Australia's legal continental shelf, an area potentially covering about 1.65 million km². Data quality was reported as very good despite losses from bad weather and equipment repairs.

Use Cases

• Model basin development and stratigraphy based on deep crustal seismic reflection profiles.
• Assess hydrocarbon or mineral resource potential of structural features within the region.
• Determine tectonic framework and crustal characteristics to understand 'ribbon continent' formation.
• Support legal definition of Australia's continental shelf boundary using acquired geophysical data.

Strengths

• Acquired 3191 km of multichannel seismic data using a 3000 m streamer and 49 litre gun arrays.
• Data was acquired on long regional lines with 30-fold coverage and 16-second records for deep crustal imaging.
• Survey specifically targeted a region of unresolved seabed boundary between Australia and New Zealand.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for specific analytical tasks.
• Data may reflect geographic and temporal bias inherent to a single 1992 survey campaign.

Provenance

Source

Australian Ocean Data Network

Collection Method

Marine geophysical survey (Survey 114) acquiring multichannel seismic data.

Time Range

Survey conducted from 6 November to 3 December 1992.

Freshness

Last updated 2026-04-16 09:14:37.307151; freshness should be verified.

Geography

Southern Lord Howe Rise, southern New Caledonia Basin, and West Norfolk Ridge region.