scholarly journals Gravity observation of field camp geophysics in Karangsambung using Data Acquisition 2005-2019

2021 ◽  
Vol 873 (1) ◽  
pp. 012049
Author(s):  
E J Wahyudi ◽  
A Laesanpura ◽  
D Sukmayadi
Keyword(s):  
Data Acquisition ◽  
Gravity Data ◽  
Geophysical Methods ◽  
Geological Mapping ◽  
Data Compilation ◽  
Gravity Observation ◽  
Variation Range ◽  
Using Data ◽  
Topographic Variation ◽  
Relative Gravimeter

Abstract The study of field camp geophysics in Karangsambung has been done since 1996 until 2019 by geophysical engineering ITB. During the field activities, students was assigned with several data acquisition using various geophysical methods. One of the most common method to conducted alongside with surface geological mapping is gravity. Compilation of gravity data during the activities will be presented in this work. There are two categories of data compilation during 24 years: data compilation 1996-2004, and 2005-2019. The observation conducted using relative gravimeter with data distribution already cover geological surface map in the study area (Luk-Ulo Melange Complex, Karangsambung Formation, Totogan Formation, and Diabas Intrusion). The pattern of gravity observation shows correlated with topographic variation. Range gravity observation from this study is about 62 mGal.

scholarly journals Joint Gravity and Seismic Reflection Methods to Characterize the Deep Aquifers in Arid Ain El Beidha Plain (Central Tunisia, North Africa)

Water ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1310
Author(s):  
Hajer Azaiez ◽  
Hakim Gabtni ◽  
Mourad Bédir
Keyword(s):  
Seismic Reflection ◽  
Large Scale ◽  
Seismic Analysis ◽  
Gravity Data ◽  
Geophysical Methods ◽  
Gravity Anomalies ◽  
Integrated Approach ◽  
Central Tunisia ◽  
Deep Aquifers ◽  
Advanced Analysis

Electric resistivity sounding and tomography, as well as electromagnetic sounding, are the classical methods frequently used for hydrogeological studies. In this work, we propose the development and implementation of an original integrated approach using the unconventional hydro–geophysical methods of gravity and seismic reflection for the fast, large–scale characterization of hydrogeological potential using the Ain El Beidha plain (central Tunisia) as an analogue. Extending the values of vintage petroleum seismic reflection profiles and gravity data, in conjunction with available geological and hydrogeological information, we performed an advanced analysis to characterize the geometry of deep tertiary (Oligocene and Eocene) aquifers in this arid area. Residual and tilt angle gravity maps revealed that most gravity anomalies have a short wavelength. The study area was mainly composed of three major areas: the Oued Ben Zitoun and Ain El Beidha basins, which are both related to negative gravity trends corresponding to low–density subsiding depocenters. These basins are separated by an important NE–SW trend called “El Gonna–J. El Mguataa–Kroumet Zemla” gravity high. Evaluation of the superposition of detected lineaments and Euler deconvolution solutions’ maps showed several NE–SW and N–S relay system faults. The 3D density inversion model using a lateral and vertical cutting plane suggested the presence of two different tectonic styles (thin VS thick). Results from the gravity analysis were in concordance with the seismic analysis. The deep Oligocene and Eocene seismic horizons were calibrated to the hydraulic wells and surrounding outcrops. Oligocene and Eocene geological reservoirs appear very fractured and compartmented. The faulting network also plays an important role in enhancing groundwater recharge process of the Oligocene and Eocene aquifers. Finally, generated isochron maps provided an excellent opportunity to develop future comprehensive exploration surveys over smaller and more favorable areas’ sub–basins.

Tectonic state and oil-gas prospects of Khidirly-Bandovan structure according to the new gravimetric data

2020 ◽  
pp. 11-18
Author(s):  
A.S. Hasanov ◽  
◽  
◽  
Keyword(s):  
Geophysical Methods ◽  
Geological Mapping ◽  
Seismic Exploration ◽  
Huge Amount ◽  
Ray Method ◽  
Common Depth Point ◽  
Geophysical Surveys ◽  
Gravimetric Data ◽  
Exploration Drilling ◽  
Oil Gas

Khidirly-Bandovan structures have been studied through geological mapping, structural exploration drilling, geophysical methods (gravimetric, magnetic, electrical, seismic exploration methods) since the 1930s. Small amount of oil from different wells in the upper part of Productive Series (PS) and huge amount of gas fountain from Middle Absheron sediments have been obtained. As the interest to these areas had not decreased, the geophysical surveys continued during further years. Seismic exploration surveys were executed in Bandovan structure via Common Depth Point (CDP) method in 2004, refracted ray method and gravimetric exploration complex in 2006 and 3D seismic exploration works and gravimetric investigations with “Scintrex CG-5 Autograv” devices in 2016, correspondingly. In the result of analysis of distribution characteristics for local gravimetric anomalies, as well as 3D descriptions of new gravimetric data, up-to-date logs on tectonic state of Khidirly-Bandovan structure have been obtained and as the new oil-gas exploration objects, the west and south-west wings of these structures highlighted.

scholarly journals Modul Perangkat Lunak Monitoring Daya Sel Surya pada Pelacakan Posisi Matahari Harian Menggunakan Delphi

2017 ◽  
Vol 14 (1) ◽  
pp. 53
Author(s):  
Martha Adelina Sihombing ◽  
Ade Agung Harnawan ◽  
Tetti Novalina Manik
Keyword(s):  
Solar Cell ◽  
Data Acquisition ◽  
Data Acquisition System ◽  
Software Module ◽  
Microsoft Excel ◽  
Power Monitoring ◽  
Current Voltage ◽  
Cell Monitoring ◽  
Using Data ◽  
Monitoring Software

Solar cell power monitoring software module in measurement of current and voltage has been made using data acquisition system device. This module is programmed by Delphi and designed according to the necessities for solar cell monitoring. Necessities for monitoring include many data that will be monitored, i.e: current, voltage, power, time and chart. This module will be integrated with hardware so that the data measured by the hardware can be acquired and displayed by the software module. All monitored data are also displayed through Microsoft Excel which then can be saved. Data acquired from the test are i.e: 0,05 A for current1, 0,2 A for current2, 0,027 V for voltage1, 0,15 V for voltage2, 0,001 W for power1, and 0,004 for power2.

scholarly journals Review of the Survey's activities in 1986

1987 ◽  
Vol 135 ◽  
pp. 5-7
Author(s):  
M Ghisler
Keyword(s):  
Geophysical Methods ◽  
Basic Research ◽  
Field Work ◽  
Systematic Investigation ◽  
Geological Mapping ◽  
40Th Anniversary ◽  
The Past ◽  
Applied Geology ◽  
Geological Background

The Geological Survey of Greenland (GGU) continued in 1986 the systematic investigation of the geology of Greenland. The work comprises geological mapping and basic research as well as applied geology and geophysics (fig. 1). The long term purpose is to establish the necessary geological background for evaluation of the potential of the non-living resources. The scientific and technical staff of 112 based in Copenhagen and 87 participating in the field work in Greenland carried out programmes of geological mapping and investigation, glaciological investigations, and mineral and oil assessments which included geochemical and geophysical methods. In April 1986 GGU celebrated its 40th anniversary. A special publication dedicated to GGU's former director, K. Ellitsgaard-Rasmussen, was issued which covers different aspects of the Survey's work in the developments in Greenland geology over the past ten years.

Magnetic and Gravity Data Acquisition in Deepwater: a new Frontier for the Potential Field Geophysics

2014 ◽  
Author(s):  
G. Gabbriellini ◽  
G. Spadini ◽  
E. De Marchi ◽  
M. Filippini ◽  
R. Finotello ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Potential Field ◽  
Gravity Data ◽  
New Frontier

scholarly journals O3D.4 Innovative approaches to data acquisition, standardization, pooling and analyses of occupational health information

2019 ◽  
Vol 76 (Suppl 1) ◽  
pp. A28.2-A28
Author(s):  
Roel Vermeulen
Keyword(s):  
Occupational Health ◽  
Data Acquisition ◽  
Health Information ◽  
Healthy Aging ◽  
Working Life ◽  
Assessment Tools ◽  
Response Curves ◽  
Related Factors ◽  
Work Related ◽  
Using Data

Occupation and employment is a major determinant of health and healthy aging. Despite the temporal increase in time spent in employment and profound changes in working life, there is limited coordinated research on occupation and health.We recently estimated that in Europe alone there is information available on more than 30 million individuals that could be used to study the association between working life and health. However, lack of standardization, inability to code large numbers of job-entries and inabilities to share data have hindered progress. In order to unlock the vault of occupational-health information novel ways of data acquisition, standardization, pooling and analyses have to be developed and implemented. The ability of pooling studies would greatly improve occupational health studies by increasing sample size for robust inference, and would allow risk stratification, identification of new risks, exploration of interactions with work and non-work-related factors and detailed analyses on the shapes of the exposure-response curves.In recent years we have seen progress in several different methodological aspects. Currently, new tools are available to collect information on work and work exposures. These include amongst others the use of sensors and mobile phone applications. Standardization of occupational information is essential for comparison of results between studies and for pooling of studies. This could be achieved by using common occupational coding schemes, use of automatic coding instruments and common exposure assessment tools. Virtual pooling of data has become possible by using data-shields which instead of bringing the data to the analyses bring the analyses to the data allowing federated analyses.As part of the OMEGA-NET symposium we will discuss the need for new tools and avenues of how to bring occupational health information together. We will present our inventory of novel tools to aid this process, and will discuss future needs.

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