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Using ASTER Images to Analyze Geologic Linear Features in Wadi Aurnah Basin, Western Saudis Arabia
M. Al Saud
The Open Remote Sensing Journal , 2008, DOI: 10.2174/187541390100101017]
Abstract: Remotely sensed data often used to study terrain surface, thus unique geomorphic and geologic features can be identified. The processing of satellite images is successfully utilized in this respect. Therefore, lineaments are commonly known among these features. They are observed as linears on satellite images and usually represent fracture traces, faults or lithologic boundaries. These systems are well utilized in the interpretation of several hydrogeological and tectonic criteria. This study introduces the procedure of identifying linear features in Wadi Aurnah basin (3100km2), of the Arabian Peninsula. Hence, the lineaments map for this catchment was produced. For this purpose, ASTER satellite images were treated using ENVI4.3 and ERDAS Imagine software. Consequently, the obtained map was analyzed using GIS techniques to interpret the behavior of the existing lineaments and their spatial distribution. This will provide valuable information that can be used in several studies related to water resources management in this basin, which is under water stress.
Processing of Landsat 8 Imagery and Ground Gamma-Ray Spectrometry for Geologic Mapping and Dose-Rate Assessment, Wadi Diit along the Red Sea Coast, Egypt  [PDF]
Ahmed E. Abdel Gawad, Atef M. Abu Donia, Mahmoud Elsaid
Open Journal of Geology (OJG) , 2016, DOI: 10.4236/ojg.2016.68069
Abstract: Maximum Likelihood (MLH) supervised classification of atmospherically corrected Landsat 8 imagery was applied successfully for delineating main geologic units with a good accuracy (about 90%) according to reliable ground truth areas, which reflected the ability of remote sensing data in mapping poorly-accessed and remote regions such as playa (Sabkha) environs, subdued topography and sand dunes. Ground gamma-ray spectrometric survey was to delineate radioactive anomalies within Quaternary sediments at Wadi Diit. The mean absorbed dose rate (D), annual effective dose equivalent (AEDE) and external hazard index (Hex) were found to be within the average worldwide ranges. Therefore, Wadi Diit environment is said to be radiological hazard safe except at the black-sand lens whose absorbed dose rate of 100.77 nGy/h exceeds the world average. So, the inhabitants will receive a relatively high radioactive dose generated mainly by monazite and zircon minerals from black-sand lens.
Geologic and economic potentials of minerals and industrial rocks in Jordan  [PDF]
Hani Alnawafleh, Khalid Tarawneh, Rami Alrawashdeh
Natural Science (NS) , 2013, DOI: 10.4236/ns.2013.56092
Abstract:

This work discusses status of the geologic and economic potentials of minerals and industrial rocks in Jordan. The major mineral resources are presented in details and the paper is designed to cover the lack of published data in this field. Geologically, the structural framework of Jordan is controlled largely by Arabian Nubian Shield in the south, block—faulted areas in the east, upwarping in north and east, and Wadi Araba-Dead Sea Transform Fault in the western part. The geologic environments include Precambrian crystalline basement (Late Proterozoic) of Arabian Nubian Shield (ANS) that is composed of igneous and metamorphic rocks at south-western part. Paleozoic rocks at southern and southeastern part consist of clastic minerals which are dominated by sandstone, whereas Mesozoic sedimentary rocks are widespread throughout southwestern, northern to southeastern parts of the country. They mainly consist of major industrial rocks and minerals such as phosphate, oil shale, limestone, dolomite, chalk, marble, gypsum, diatomite and tripoli. Cenozoic Era is composed of sedimentary and volcanic rocks in different parts of Jordan. There are more than twenty nonmetallic minerals and four main metallic deposits within the various geologic environments. This paper summarizes their distribution, chemical and mineralogical characteristics, in addition to their production statistics.

Hydrology and Water Harvesting Techniques of Wadi Muheiwir Catchment Area-The Case Study of Jordan  [PDF]
Jarrah Al-Zubi,Yasin Al- Zubi,Samih Abubaker
Journal of Applied Sciences , 2010,
Abstract: The study area is located in the Eastern parts of Jordan in semi arid area. The determination of flows has been done by applying the United States Soil Conservation Services (SCS). Curve number approach to the available rainfall data since 1976 till 2006 taking in consideration the Antecedent Moisture Conditions (AMC), the initial abstraction of rainfall and land use. The Curve Number (CN), was calculated from the topographic maps, geologic map and land use map. Therefore, the curve number 80 was found for Wadi Muheiwir catchment area. The calculations of the flood volumes for Wadi Muheiwir catchment area were determined and statistically analyzed by applying Gumble theory (distribution). The calculations and the results for 10, 25, 50,100 and 200 years return period were estimated. The long-term average runoff is 0.063 MCM. It ranges between zero and 0.544 MCM. Macro and micro water harvesting techniques suitability for Wadi Muheiwir were reviewed depending on the criteria used in the classification and its suitability for agricultural activity.
G-WADI—the first decade
W. Mike Edmunds,Ramasamy Jayakumar,Anil Mishr,Abdin Salih,Soroosh Sorooshian,Howard S. Wheater,William Logan
寒旱区科学 , 2013,
Abstract: The G-WADI network by UNESCO promotes the global capacity for management of water resources in arid and semi-arid areas. The primary aim has been to build a comprehensive global network to promote regional and international cooperation so as to increase knowledge and improve management practices through the sharing of information. The G-WADI objectives and achievements of the past 10 years are reviewed. A number of key initiatives have been implemented––the formation of five regional networks, the creation of a central G-WADI web site, promotion of near-real-time rainfall distribution software enhanced by the inclusion of satellite based precipitation estimations, as well as workshop and web-based activities on chemical and isotopic tracers and on rain water harvesting. Two workshops on surface and on groundwater modeling, supported by publications have been held in India and China. The Asian G-WADI network remains very active, but activities in the other three regions are developing (Africa, Arab Region, Latin America and the Caribbean).
Reflections about the geologic trails in Slovenia  [PDF]
Rajko Pavlovec
Geologija , 2002,
Abstract: In Slovenia exist several longer or shorter geologic trails. The author prefers shorter, but better prepared geologic trails. Such trails are more interesting to individuals, and they are useful also for school excursions and natural science days.
Health Benefits of Geologic Materials and Geologic Processes  [PDF]
Robert B. Finkelman
International Journal of Environmental Research and Public Health , 2006, DOI: 10.3390/ijerph2006030042
Abstract: The reemerging field of Medical Geology is concerned with the impacts of geologic materials and geologic processes on animal and human health. Most medical geology research has been focused on health problems caused by excess or deficiency of trace elements, exposure to ambient dust, and on other geologically related health problems or health problems for which geoscience tools, techniques, or databases could be applied. Little, if any, attention has been focused on the beneficial health effects of rocks, minerals, and geologic processes. These beneficial effects may have been recognized as long as two million years ago and include emotional, mental, and physical health benefits. Some of the earliest known medicines were derived from rocks and minerals. For thousands of years various clays have been used as an antidote for poisons. “Terra sigillata,” still in use today, may have been the first patented medicine. Many trace elements, rocks, and minerals are used today in a wide variety of pharmaceuticals and health care products. There is also a segment of society that believes in the curative and preventative properties of crystals (talismans and amulets). Metals and trace elements are being used in some of today’s most sophisticated medical applications. Other recent examples of beneficial effects of geologic materials and processes include epidemiological studies in Japan that have identified a wide range of health problems (such as muscle and joint pain, hemorrhoids, burns, gout, etc.) that may be treated by one or more of nine chemically distinct types of hot springs, and a study in China indicating that residential coal combustion may be mobilizing sufficient iodine to prevent iodine deficiency disease.
Geologic Field Database
Katarina Hribernik,Jasna ?inigoj,Marko Komac,Robert ?ajn
Geologija , 2002,
Abstract: The purpose of the paper is to present the field data relational database, which was compiled from data, gathered during thirty years of fieldwork on the Basic Geologic Map of Slovenia in scale1:100.000. The database was created using MS Access software. The MS Access environment ensures its stability and effective operation despite changing, searching, and updating the data. It also enables faster and easier user-friendly access to the field data. Last but not least, in the long-term, with the data transferred into the GISenvironment, it will provide the basis for the sound geologic information system that will satisfy a broad spectrum of geologists’ needs.
On the Testing of Seismicity Models  [PDF]
George Molchan
Physics , 2011, DOI: 10.2478/s11600-011-0042-0
Abstract: Recently a likelihood-based methodology has been developed by the Collaboratory for the Study of Earthquake Predictability (CSEP) with a view to testing and ranking seismicity models. We analyze this approach from the standpoint of possible applications to hazard analysis. We arrive at the conclusion that model testing can be made more efficient by focusing on some integral characteristics of the seismicity distribution. This is achieved either in the likelihood framework but with economical and physically reasonable coarsening of the phase space or by choosing a suitable measure of closeness between empirical and model seismicity rate in this space.
Static behaviour of induced seismicity  [PDF]
Arnaud Mignan
Physics , 2015,
Abstract: The standard paradigm to describe seismicity induced by fluid injection is to apply nonlinear diffusion dynamics in a poroelastic medium. I show that the spatiotemporal behaviour and rate evolution of induced seismicity can, instead, be expressed by geometric operations on a static stress field produced by volume change at depth. I obtain laws similar in form to the ones derived from poroelasticity while requiring a lower description length. Although fluid flow is known to occur in the ground, it is not pertinent to the behaviour of induced seismicity. The proposed model is equivalent to the static stress model for tectonic foreshocks generated by the Non- Critical Precursory Accelerating Seismicity Theory. This study hence verifies the explanatory power of this theory outside of its original scope.
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