Search found 10 matches

by deepamk1989
Thu Jun 08, 2017 9:47 am
Forum: General Geophysics and Geoscience
Topic: Geophysical method in clay
Replies: 2
Views: 1317

Re: Geophysical method in clay

Thanks a lot :)
by deepamk1989
Thu Jun 08, 2017 9:46 am
Forum: General Geophysics and Geoscience
Topic: GPR in clay
Replies: 6
Views: 2407

Re: GPR in clay

Thanks a lot. I did well for the exam :)
by deepamk1989
Sun Jun 04, 2017 2:11 pm
Forum: General Geophysics and Geoscience
Topic: Geophysical method in clay
Replies: 2
Views: 1317

Geophysical method in clay

Hello all, Which geophysical methods can be used for identification of the soil depth and the soil stratigraphy in an area where some geotechnical boreholes indicate that the soil thickness can be as much as 10 m and that the soils consist of clay in the top layer. I feel CVES resistivity method is ...
by deepamk1989
Sun Jun 04, 2017 1:17 pm
Forum: General Geophysics and Geoscience
Topic: GPR in clay
Replies: 6
Views: 2407

Re: GPR in clay

Thanks a lot for quick replies:) A very complex traffic interchange will be constructed in the hard rock, approximately 10 m beneath the ground surface. The new interchange is mainly located in a hill of outcropping hard rock and the rock structures are mainly steeply dipping in this area.Can you su...
by deepamk1989
Sun Jun 04, 2017 5:26 am
Forum: General Geophysics and Geoscience
Topic: GPR in clay
Replies: 6
Views: 2407

GPR in clay

Hello all,
GPR has to be used in a thick layer of clay. What should you consider to make the collected data usable? I read GPR is not good in clay due to high signal attenuation. But i see in many places they use GPR in clays.
Thanks in advance :)
by deepamk1989
Sun Jun 04, 2017 2:36 am
Forum: General Geophysics and Geoscience
Topic: VLF interpretations from real and imaginary plots
Replies: 8
Views: 2211

Re: VLF interpretations from real and imaginary plots

Hello again, In an EM survey what are could be the reasons for getting a strong anomaly in quadrature field but not in phase? Instrument has multiple receivers and it showed response only in first two receivers. My guess "it is because the conductors are shallow which made it undetectable for the la...
by deepamk1989
Sat Jun 03, 2017 1:10 pm
Forum: General Geophysics and Geoscience
Topic: VLF interpretations from real and imaginary plots
Replies: 8
Views: 2211

Re: VLF interpretations from real and imaginary plots

Sorry no raw data available. Thanks a lot for your help :)
by deepamk1989
Sat Jun 03, 2017 12:03 pm
Forum: General Geophysics and Geoscience
Topic: VLF interpretations from real and imaginary plots
Replies: 8
Views: 2211

Re: VLF interpretations from real and imaginary plots

Thanks a lot for the reply and the guide. As per the guide the left one is a sure indication of good conductor since the inphase and quadrature are almost equal and of opposite signs. The right one with big anomaly also looks promising to me as you said. I also feel right has to be from conductor le...
by deepamk1989
Sat Jun 03, 2017 9:22 am
Forum: General Geophysics and Geoscience
Topic: VLF interpretations from real and imaginary plots
Replies: 8
Views: 2211

Re: VLF interpretations from real and imaginary plots

The site is contaminated with industrial wastes. The original soils consist of till (1‐2 m) on top of hard crystalline bedrock, but the soils nowadays are mainly coarse filling material (sandy‐gravelly composition). The water supply in the village is today based on a drilled well, located west of th...
by deepamk1989
Fri Jun 02, 2017 5:40 pm
Forum: General Geophysics and Geoscience
Topic: VLF interpretations from real and imaginary plots
Replies: 8
Views: 2211

VLF interpretations from real and imaginary plots

Hej all, I am confused with interpreting graphs of VLF. From what i read high values for real part and high value for imaginary (either on the same side or opposite side) shows it to be a good conductor. Is there any value range for it to be a natural anomaly? If the site is contaminated with indust...