Flexibility and Scalability
The DIAS32 system provides total flexibility in survey design and can be deployed to achieved virtually any survey resolution. The DIAS32 system is not constrained by set cable lengths, so it can survey using custom inter-electrode spacings – even a 126.3 m spacing. In this way, the survey resolution can be tuned to precisely match the target depth in the survey area. And if the target depth varies across the survey area, the inter-electrode spacing can be easily adjusted for each line.
High Data Volume
Where the target depth is great, the resolution and accuracy of traditional resistivity methods is challenged. The 3D resistivity survey approach provides a data-rich survey product that significantly improves the accuracy and resolution of model images to great depth. 3D surveys produce 5 to 20 times the data volume than traditional methods.
The DIAS32 system is normally deployed in multi-pole mode, which delivers both pole-dipole and pole-pole data sets. The addition of the pole-pole resistivity data set provides enhanced depth sensitivity and can be jointly inverted with the pole-dipole data set for more accurate imaging at depth.
The DIAS32 system is light and portable, so full line cutting is not required for most survey areas. Simple brushing out of the lines is normally sufficient. This can significantly reduce the overall cost of a survey.
By minimizing the amount of wire required for surveying, a DIAS32 survey also minimizes leakage, EM coupling, and other noise sources associated with emplacement of wire through the survey area.
Dias has developed a unique system for surveying across lakes. We deploy our receivers in waterproof floats that are tethered to the reference wire. GPS recording ensures that we know the exact location of each electrode, even when strong winds deflect the receivers from their idealized positions.
Dias Geophysical’s DIAS32 3D induced polarization and resistivity (DCIP) system is unique in its ability to deliver high volume data sets that include both multi-azimuth and multi-scale dipoles. These data sets support highly resolved and accurate 3D models of resistivity and chargeability.
In many environments, conventional 2D DCIP surveys image the geology with a high degree of uncertainty. 2D surveys generally produce a relatively low data density and lack the ability to confidently image sources between the survey lines. As a result, there is significant risk in targeting drill holes in complex geologic environments and the ability to accurately image deep sources is limited.
Dias has patented a completely new mode of acquiring IP and resistivity data called CVR. The DIAS32 system measures the response from individual electrode sensors relative to a common voltage reference (CVR) wire. DIAS32 provides advantages in safety, operational efficiency, data volume and data quality. The DIAS32 system can be deployed in any array configuration at any scale, both in 3D and 2D. CVR allows for the computation of a dipole from any two electrodes across the survey area. This yields a rich, high volume data set that contains multi-azimuth and multi-scale dipoles. Most DIAS32 surveys yield data sets of several million possible dipoles.
In the figure above, note the significant resolution difference between the DIAS32 resistivity survey model (top) and the 2D model (bottom). In several places the apparent geologic features and trends differ significantly in the two models.
In the image to the right, note the significant differences between the 2D and 3D models. The vertical sources at depth are known vertical conductive basement units.
DIAS32 CVR data sets provide accurate, high resolution models for confident interpretation and follow-up.
Dias delivers unique geophysical solutions to geoscience challenges through the application of innovative technologies. Dias offers induced polarization and resistivity survey services using its proprietary DIAS32 system, a uniquely efficient and effective technology. Dias provides full tensor magnetic gradient survey services using the SQUID-based FTMG system in partnership with Supracon AG.
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Join us virtually for the PDAC premier mineral exploration and mining convention between March 8-11, 2021.READ MORE
Join us virtually at AME’s first Remote Roundup conference from January 18-22, 2021.READ MORE
Please plan to visit us at our booth at the Roundup in Vancouver from January 28 to 31.READ MORE
Please join Dias Geophysical in the exhibition hall at the DMEC conference from October 22 to 25, 2017. Dias will be sharing a booth withREAD MORE
Dias Geophysical is exhibiting at the PDAC Conference from March 5 to 8. Please visit our booth # 6210N in the North Convention area.READ MORE
Stop by the Dias Geophysical booth at the ASEG conference in Perth, Australia.READ MORE
Join Dias Geophysical at our booth at the AMEBC Roundup conference in Vancouver.READ MORE
Dias presents an overview of the DIAS32 system at the KEGS monthly meeting in Toronto.READ MORE