scholarly journals Mapping of Groundwater through the Integration of Remote Sensing and Vertical Electrical Sounding in ASALs: A Case Study of Turkana South Sub-County, Kenya

2019 ◽  
Vol 07 (11) ◽  
pp. 229-243
Author(s):  
Daniel Mogaka Nyaberi ◽  
Evans Basweti ◽  
Justus Obiko Barongo ◽  
George Mokua Ogendi ◽  
Patrick Chege Kariuki
Insects ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 728
Author(s):  
Jamilu Bala Ahmed ◽  
Abdullahi Salisu ◽  
Biswajeet Pradhan ◽  
Abdullah M. Alamri

Termite nests have long been suggested to be good indicators of groundwater but only a few studies are available to demonstrate the relationship between the two. This study therefore aims at investigating the most favourable spots for locating groundwater structures on a small parcel of land with conspicuous termite activity. To achieve this, geophysical soundings using the renowned vertical electrical sounding (VES) technique was carried out on the gridded study area. A total of nine VESs with one at the foot of a termitarium were conducted. The VES results were interpreted and assessed via two different techniques: (1) physical evaluation as performed by drillers in the field and (2) integration of primary and secondary geoelectrical parameters in a geographic information system (GIS). The result of the physical evaluation indicated a clear case of subjectivity in the interpretation but was consistent with the choice of VES points 1 and 6 (termitarium location) as being the most prospective points to be considered for drilling. Similarly, the integration of the geoelectrical parameters led to the mapping of the most prospective groundwater portion of the study area with the termitarium chiefly in the center of the most suitable region. This shows that termitaria are valuable landscape features that can be employed as biomarkers in the search of groundwater.


Author(s):  
Malick Rosvelt Demanou Messe ◽  
Jean Victor Kenfack ◽  
François Ngapgue ◽  
Armand Sylvain Ludovic Wouatong ◽  
Elvise Abasoh Makem ◽  
...  

2021 ◽  
Vol 60 (3) ◽  
pp. 211-228
Author(s):  
Jamal Asfahani

Fractal modeling technique, with adapting the concentration-number (C-N) model and the threshold break points concept is newly proposed to interpret vertical electrical sounding (VES) measurements distributed along a given profile. New semi quantitative approach is consequently proposed to rapidly differentiate between different apparent resistivity populations, where 2D semi quantitative interpretation and a primary geological analysis could be constructed. The new technique is practiced and tested on a case study taken from Khanasser Valley, Northern Syria, where different selected profiles (LP1, LP2, LP3, and TP5) are interpreted. The availability and the feasibility of the proposed approached are confirmed and approved through the different comparisons between the multi fractal established cross sections and the traditional 1D VES interpretation models. It is recommended to routinely use this new proposed fractal approach in the geoelectrical researches for interpreting VES measurements distributed along a given profile.


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