IOSR-JAGG   Volume-10 ~ Issue-3 ~ May – Jun.. 2022

Abstract: An electrical resistivity and geologic investigation was carried out in selected parts of Mbano, Mbaise and Onuimo in Imo state Nigeria. Vertical electric surrounding (VES) technique was used along with lithologic logs from available water wells within the area in constructing the subsurface geology, water resources and their special relationship. Also the relationship between the VES and the lithologic logs was investigated. It was established that the VES data could be used in broadly constructing the geology of the subsurface, finding the depth to water table as well as estimating the thickness of the potential aquifers. The study was ale to identify the sources of surface water within the study area by superimposing water table and lithology at each location. The Benin formation is by far......

Key Word: Geoelectric parameters, Subsurface geology and Groundwater resources, Vertical electric surrounding (VES) technique, Aquiferous units, Imo state Nigeria.

Abstract: Land use and land cover (LULC) mapping is important for various activities ranging from proper resource allocation to policy planning. Freely available satellite data from multispectral instruments has opened wide doors for their applications in urban planning, natural resource monitoring, and change analysis. Previously, many researchers have individually used multispectral instruments, i.e., Sentinel-2 (10m), Gaofen-6 (16m), and Landsat-8 (30m) for land-use classification, but till now, no study has evaluated the efficiency of these three instruments in land-use classification. So this study evaluated the comparison of these instruments using accuracy assessment and area esitimation by machine learning classification over the Mardan district of Pakistan. The study revealed that.......

Key Word: LULC; Machine Learning; sentinel-2; landsat-8; Gaofen-6

Abstract: Background: The gravity method is one of the geophysical exploration methods, its application is made by measuring the acceleration of gravity below the earth's surface due to the distribution of mass density between rocks that are uniform in an area and topographic variations in the area. Earth surface. Ebulobo Volcano is located in Ngada Regency, Flores – East Nusa Tenggara. Ebulobo volcano another name Ambarombu located in the Ngada district has a stratotype of the volcano at the height of 2123 meters above sea level.
Materials and Methods: The gravity data in this study has an area of 10 km x 12 km with a distribution of 2530 observation points. This study aims to interpret the subsurface area of the Ebulobo Volcano based on the results of 3D inversion modeling using Grablox software.......

Key Word: Subsurface, modeling, Ebulobo Mountaint, gravity, CGM Plus

Abstract: Did you know that our stellar system, the Sun, together with all its planets and their companions, moves through space at a speed of 20 kilometers per second towards the apex of its solar motion in the constellation Hercules? It moved 600 million kilometers in a year. Thanks to this phenomenon, nature has enabled to us to travel through space. When a spaceship leaves the gravitational field of our sun, it moves at the speed at which our solar system moves away from its please toward the apex of its solar motion in the constellation Hercules, twenty kilometers.......

Abstract: In this Research work integrated geophysical techniques with gravity surveys method have been carried out over the Corbetti Caldera in the central Main Ethiopian Rift (CMER) to verify the geothermal potential of the caldera.The Corbetti Caldera is characterized by Quaternary volcano tectonic activity which is mainly silicic volcanism and a resurgent caldera structural system. The Quaternary volcanism is associated with a wide spread of steaming ground and fumarolic activity which evidenced the existence of a heat source at depth. 200 gravity data have been used and analyzed and results are presented as gravity counter map for qualitative interpretation. The complete Bouguer gravity anomaly map of the area indicates the existence of intrusion beneath the caldera, i.e. the highest Bouguer gravity anomaly resulting from the higher density of the intrusion. Based on the joint analysis of data from these geophysical methods and thermal manifestations in the area.

Keywords: Gravity Surveys, Corbetti Caldera in the central Main Ethiopian Rift (CMER), Quaternary Volcano Tectonic Activity, Caldera, Geophysical Method.

Abstract: Background: The climate change due to global warming is associated with the effect of the deforestation and La Nina phenomena and has many impacts, one of which is the flood in Sintang, West Kalimantan that occurred from 21 October to the end of November 2021. The flood in Sintang was the worst flood in the last 50 years, with water level of over 2 meters and lasting over 1 month. Materials and Methods: The objective of this research was to evaluate the causes of flood in Sintang, its consequences, and the efforts to deal with it that need to be.....

Keywords: the worst flood in sintang; deforestation and environmental degradation; impact of la nina phenomena in indonesia

Abstract: Search for engineering and other challenges associated with bridge construction require tactfulness and sensitivity to assure overall technical and financial success for the project. This paper focuses on the investigation of the geophysical properties of the soil and the underlying basement rock of the proposed site of a bridge at Umuohi section of Ozubulu-Okija road in Okija, Anambra State. The geophysical investigation involved geological hydrogeological survey of the study area followed by Geo-electrical investigation. Two Coordinates were taken at two stations using Vertical Electrical Sounding (VES) done using Campus Ohmega Resistivity meter model 143 instrument........

Keywords: Foundation, Geophysical, Lithology, Sounding, Subsurface Instability