FIELD TRANNING
Coordinator:
Ground
Water Board of Rajasthan.
Jodhpur.
Rajasthan.
Submitted in partial fulfillment
of the requirements for the degree of
Master
of Science (TECHNOLOGY)
IN
GEOPHYSICS (EXPLORATION)
Under The Guidance of By
Dr. Manas Banerjee . Dhiman
Mondal.
DEPARTMENT OF GEOPHYSICS
FACULTY OF SCIENCE
BANARAS HINDU UNIVERSITY
VARANASI – 221005
2005-2006
Introduction:
Every year a departmental tour is conducted to provide
the students of 2nd year Msc. (Tech.) geophysics a practical knowledge of field work. During the session 2005-2006
the tour was held in Jodhpur, Rajasthan at Ground Water Department
of Rajasthan. The main objective was to learn the different methods particularly used to detect ground water in Rajasthan
with respect to the local geology. Field training forms an integral part of the curriculum of 3rd semester syllabus.
This is because the topics included in our 3rd semester were gravity and magnetic methods, geo electromagnetic
methods and some more in which field training is an essential part without which our practical knowledge about the subject
remains incomplete. Keeping this fact in view , the department of Geophysics, Banaras Hindu University arranged the field training program to provide us with some first hand experience of field work.
This training was under the supervision of our respected Dr Manas Banerjee. The field work was based on groundwater
exploration in and around Jodhpur , based on Resistivity method
, VLF(Very Low Frequency) and Well log method. It was a challenging task, taken into consideration the fact that drinking
water is scarce in the whole of Rajasthan and until last couple of years people had to cover large distances in search of
drinking water. Jodhpur itself being situated in the arid region , west of the Aravalli range ,the task of groundwater exploration
was all the more important because of its necessity in those regions
Comparing with the rest of the states Rajasthan gets a small share of amount of rainfall during the monsoon. Thar Desert and its surroundings is considered as one of the water scantily zones throughout the world.
It was seen earlier that groundwater lies in the fracture zones in the hard rock layers below the alluvium deposit.
As far as Jodhpur and its adjoining areas are concerned, the
found in those areas is mostly saline with high EC value, not fit for drinking or cooking purposes. Therefore extensive prospecting
work is being carried out in those areas for fresh water sources. Thus this field
training work and its location was quite justified.
In this field report, the strength has been given on the methodological approach for groundwater exploration. All the
methods discussed in this report are precise to groundwater restricting with respect to other requirements.
