Integration Study of a New Gravity and Seismic Survey along NE- SW Profilein Al- Najaf Desert

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Sørensen, K. (2001). The year in focus, 2000. Geology of Greenland Survey Bulletin, 189, 7-10. https://doi.org/10.34194/ggub.v189.5148 _______________ The year 2000 was unusual in that it lacked major field activity directly involved with the systematic geological mapping of Greenland. However, field activities were again many and varied, including a successful highresolution seismic survey offshore central West Greenland, and a joint Geological Survey of Denmark and Greenland (GEUS) – Danish Lithosphere Centre (DLC) project centred on Kangerlussuaq in southern East Greenland. Of the Survey’s 354 personnel, 93 were allocated to Greenland-related activities (Table 1). The Greenland level of activity in 2000, both in Copenhagen and in the field, thus compared favourably with that of 1999.

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Baseline Seismic Survey for Gundih CCS Pilot Project

SSRN Electronic Journal ◽

10.2139/ssrn.3366416 ◽

2019 ◽

Author(s):

Alfian Alfian ◽

Rachmat Sule ◽

Awali Priyono ◽

Masami Hato ◽

Takeshi Kozawa ◽

...

Keyword(s):

Pilot Project ◽

Seismic Survey

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Transboundary geophysical mapping of geological elements and salinity distribution critical for the assessment of future sea water intrusion in response to sea level rise

Hydrology and Earth System Sciences ◽

10.5194/hess-16-1845-2012 ◽

2012 ◽

Vol 16 (7) ◽

pp. 1845-1862 ◽

Cited By ~ 55

Author(s):

F. Jørgensen ◽

W. Scheer ◽

S. Thomsen ◽

T. O. Sonnenborg ◽

K. Hinsby ◽

...

Keyword(s):

Groundwater Flow ◽

Sea Level Rise ◽

Sea Level ◽

Preferential Flow ◽

Sea Water ◽

Saline Water ◽

Seismic Survey ◽

Salinity Distribution ◽

Geological Structures ◽

The North

Abstract. Geophysical techniques are increasingly being used as tools for characterising the subsurface, and they are generally required to develop subsurface models that properly delineate the distribution of aquifers and aquitards, salt/freshwater interfaces, and geological structures that affect groundwater flow. In a study area covering 730 km2 across the border between Germany and Denmark, a combination of an airborne electromagnetic survey (performed with the SkyTEM system), a high-resolution seismic survey and borehole logging has been used in an integrated mapping of important geological, physical and chemical features of the subsurface. The spacing between flight lines is 200–250 m which gives a total of about 3200 line km. About 38 km of seismic lines have been collected. Faults bordering a graben structure, buried tunnel valleys, glaciotectonic thrust complexes, marine clay units, and sand aquifers are all examples of geological structures mapped by the geophysical data that control groundwater flow and to some extent hydrochemistry. Additionally, the data provide an excellent picture of the salinity distribution in the area and thus provide important information on the salt/freshwater boundary and the chemical status of groundwater. Although the westernmost part of the study area along the North Sea coast is saturated with saline water and the TEM data therefore are strongly influenced by the increased electrical conductivity there, buried valleys and other geological elements are still revealed. The mapped salinity distribution indicates preferential flow paths through and along specific geological structures within the area. The effects of a future sea level rise on the groundwater system and groundwater chemistry are discussed with special emphasis on the importance of knowing the existence, distribution and geometry of the mapped geological elements, and their control on the groundwater salinity distribution is assessed.

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