Basically it is electromagnetic method. It works
with a freq of 15-30 khz of em waves transmitted from a distant
navigation transmitter. The em waves are induced in to ground, in the
presence of conductor or saturated body, secondary em waves are
The instrument is used to delineate worthy and un-worthy areas.
|1. Case study.|
|Aquifer delineation work was carried out in GP 9 watershed under AQMP PROJECT by conducting resistivity surveys in grid pattern. A grid of 1 km x 1 km was prepared for the entire watershed and at every intersection point VES was conducted.|
|Blue colour – Low resistivity zone (Aquifer)
Red colour - High resistivity zone (Un-worthy area or unsaturated area)
|2. Case study.|
|Aquifer delineation work was carried out in Jalna district under MWSIP Project (GP 20) and iso-resistivity zone was prepared for AB/2 - 15m separation.|
|The Electrical resistivity surveys play an important role from Groundwater development to Groundwater management.
All regional offices Konkan Bhavan, Pune, Nashik, Aurangabad, Amravati and Nagpur are well equipped with Geophysical units. The survey charge for cultivators is Rs. 1500. The amount should be deposited in nearest District Senior Geologist GSDA Office.