PACIFIC OBJECTIVES AND RESULTS

OBJECTIVES

PACIFIC aims at developing radically new, cost-efficient and environmentally friendly mineral exploration techniques.

PACIFIC approach builds on the “traditional” passive seismic method which uses large arrays of autonomous seismometers deployed at the surface.

These seismometers record ambient seismic noise generated by traffic, ocean waves, quarrying activities, or atmospheric effects, thus providing useful background information about the geological and structural setting of mineralised regions.

However, the technique relies on surface waves that attenuate rapidly with depth, and lacks the resolution needed for reliable identification of ore bodies.

Two radically new developments are therefore planned in the PACIFIC project:

Figure 1: Passive reflection seismic technique.

THE PASSIVE REFLECTION SEISMIC TECHNIQUE

This technique is appropriate for greenfields exploration. In this technique, PACIFIC partners will extract body waves from ambient seismic noise and use them to detect reflections at geological interfaces.

Figure 2: Multi-array passive seismic imaging technique.

THE MULTI-ARRAY PASSIVE SEISMIC IMAGING TECHNIQUE

This technique is typically deployed during drilling or in brownfields exploration. Here PACIFIC partners will use two types of arrays – one at the surface and another deployed vertically in drill holes. This will dramatically increase the depth resolution of the method.

RESULTS

By the end of the project, PACIFIC will provide the mineral exploration industry with a new tool for exploring the subsurface, by making two major improvements to the traditional method and bringing it closer to industrial exploitation.

The project will also contribute to increasing public acceptance of mineral exploration activities by providing an environmentally friendly complement to current exploration techniques.

PACIFIC is therefore promoting passive seismic techniques in order to provide invaluable information about the sub-surface for mineral exploration, with minimal impact on local populations as well as on the environment.

Work at Marathon test site (Canada).

The product will be a new mineral exploration tool that will provide detailed 3D information on the subsurface and will be able to image small targets without the financial and environmental burden of the active seismic approach.

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Core samples from drilling in Scandinavia

Geophones are ‘listening to the Earth’ in Andalusia until the end of April

On 28 and 29 March 2019, at the Las Cruces mine* north of Seville in Andalusia, a seismic network of 132 geophones covering an area of about 1 x 2 km was installed for one month...

INFACT / PACIFIC Joint passive seismic data acquisition

These days the two projects funded by the EU H2020 programme INFACT and PACIFIC are conducting a joint passive seismic data acquisition campaign in Spain. Stay tuned for more...

“Passive Imaging & Monitoring in Wave Physics: From Seismology to Ultrasound” workshop in Cargèse, Corsica

PACIFIC supports the "Passive Imaging & Monitoring in Wave Physics: From Seismology to Ultrasound" workshop that will take place on September 16-20, 2019 in Cargèse (Corsica,...

Check out the PACIFIC flyer!

The PACIFIC flyer is now available for download in the media centre! It sums up the activities of the PACIFIC project and allows you to understand its approach and objectives....

PACIFIC public deliverables: first reports available!

After eight months, the PACIFIC consortium has already released nine public deliverables: Assessment of active seismic workflows; Report on the physical properties and seismic...

PACIFIC attendance at international events : check the list!

Since the begining of the project in June 2018, the PACIFIC team has attended and has presented the project at the following international conferences:   24th European Meeting of...

Field acquisition of seismic data completed at Marathon, Canada

The Stillwater Canada Inc. team has completed the field acquisition of seismic data at the Marathon site in Canada. Out of the 1024 sensors that were successfully deployed, 1019...
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