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GEOMORPHOLOGICAL FEATURES AND SUBSURFACE GEOLOGY OF THE LOWER MEKONG PLAIN AROUND PHNOM PENH CITY, CAMBODIA (SOUTHEAST ASIA)  [cached]
Sumiko Kubo
Revista Geográfica Acadêmica , 2008,
Abstract: The geomorphological features of the Lower Mekong Plain and their relationships with floods, as well asthe subsurface geology and the major depositional processes in the area, are discussed. From theinterpretation of aerial photos and field reconnaissance, the Lower Mekong Plain in Cambodia ischaracterized as a floodplain with natural levees and back marshes. These geomorphological featuresinfluence the extent of the extensive inundation that occurs during every rainy (wet) season. An extremeflood in 2000 confirmed the close relationship between micro-landforms and the flooding. A preliminarystudy of bore-hole logs in the area of Phnom Penh was also carried out. Base rocks are shallower in thewestern part, whereas thick (>130 m) Quaternary deposits occur in the eastern part, suggesting the presenceof a structural basin.
Heavy Metal Contamination Assessment of Groundwater Resources in Behbahan Plain Southwest Zagros  [PDF]
Zohreh Marbooti, Rezvan Khavari, Farhad Ehya
Open Journal of Geology (OJG) , 2015, DOI: 10.4236/ojg.2015.55029
Abstract: Ground water is an important issue in environmental engineering and water supply systems, so preservation and purification of ground water have a critical role in any community. This paper investigates the concentration of several elements such as Pb, Cd, As, Se, Co and Zn for ground water in Behbahan (a city in southwest of Iran), to this purpose a group of 30 wells were studied to determine the heavy metal concentration, physical parameters (PH, EC, TDS, Temperature) in situ. The major ions’ values of?HCO3-2,?SO42-, Cl-, Na+, Mg2+, Ca2+, K+?were measured for the wells based on the titrimetrical and flame photometry and optical emission spectrophotometer. Results of the analyses indicated the concentration of Pb, As, Cd and Se in 33, 13, 56, 100 percent greater than normal range of WHO standard respectively. No pollution of Co and Zn was seen in any specimen. There is a low correlation between Pb and major ions value, so it can be concluded that Pb overconcentration is caused by human contamination. The high correlation between Se, As and major cations and anions, implies that they can originate from dissolution and liquidation of mineral evaporation in the zone. The high rate of Cd concentration in urban sewage water is due to the small industries, workshops and mills wastewater.
First Results from HOTSPOT: The Snake River Plain Scientific Drilling Project, Idaho, U.S.A.
John W. Shervais,James P. Evans,Thomas Lachmar,Katherine E. Potter
Scientific Drilling , 2013, DOI: 10.2204/iodp.sd.15.06.2013
Abstract: HOTSPOT is an international collaborative effort to understand the volcanic history of the Snake River Plain (SRP). The SRP overlies a thermal anomaly, the Yellowstone-Snake River hotspot, that is thought to represent a deep-seated mantle plume under North America. Theprimary goal of this project is to document the volcanic and stratigraphic history of the SRP, which represents the surface expression of this hotspot, and to understand how it affected the evolution of continental crust and mantle. An additional goal is to evaluate the geothermal potential of southern Idaho.Project HOTSPOT has completed three drill holes. (1) The Kimama site is located along the central volcanic axis of the SRP; our goal here was to sample a long-term record of basaltic volcanism in the wake of the SRP hotspot. (2) The Kimberly site is located near the margin of the plain; our goal here was to sample a record of high-temperaturerhyolite volcanism associated with the underlying plume. This site was chosen to form a nominally continuous record of volcanism when paired with the Kimama site. (3) The Mountain Home site is located in the western plain; our goal here was to sample the Pliocene-Pleistocene transition in lake sediments at this site and to sample older basalts that underlie the sediments.We report here on our initial results for each site, and on some of the geophysical logging studies carried out as part of this project.
Magnetism parameters characteristics of drilling deposits in Jianghan Plain and indication for forming of the Yangtze River Three Gorges
YuFen Zhang,Chang’an Li,QiuLiang Wang,Liang Chen,YongFa Ma,ChunGuo Kang
Chinese Science Bulletin , 2008, DOI: 10.1007/s11434-008-0111-1
Abstract: The forming time of the Yangtze River Three Gorges is considered as one of keys in the research on the Yangtze River, also is one of the most disputed hotspots. In order to solve the difficult problem, the authors adopt the internationally recognized thoughts and methods of substance tracing from source to sink. The lithologic characteristics, magnetic parameters and magnetic mineral characteristics of deposits in 2 bores are analyzed, which are both sampled from the sedimentary center of the Jianghan Plain. The results are as follows: At about 110 m depth of the core, the contents of coarse materials and stable magnetic mineral both increase significantly. Meanwhile, the magnetic susceptibility of sediment, saturation isothermal remanent magnetization and magnetic susceptibility values of anhysteretic remanent magnetism increase suddenly, which all reflect that at about 110 m depth, the important adjustment has appeared in water system of the Jianghan Plain, and the sedimentary environment and material composition have changed greatly. And it may be the horizon where the Yangtze River Three Gorges formed, its forming time reflected by the paleomagnetic dating is between 1.17 and 1.12Ma B.P.
Palaeorunoff estimations achieved from palaeoclimatic information for the southwest part of the North China Plain: an attempt to apply a climatological approach to palaeohydrology
WANG Hong-ya,XIE Qiang,
WANG Hong-y
,XIE Qiang

环境科学学报(英文版) , 2000,
Abstract: Palaeoclimatic scenario projecting annual temperature and annual precipitation is firstly formalized with data available and speculations for the southwest part of the North China Plain (35- 37°N, 115-119°E) during the last 25000 years. Then, with three regression equations relating annual runoff to annual precipitation and derived with data of modern hydrological and meteorological records, values of annual runoff are calculated in terms of the corresponding values of annual precipitation from this palaeoclimatic scenario for this region during this temporal interval. These results indicate that runoff is the most during 8000-3000a B.P. and the least during 25000-12000 a B. P.; runoff occurring during 12000-8000 a B.P. and during 3000-0 a B.P. is less than the one occurring during 8000-3000 a B.P. and more than the one occurring during 25000-12000 a B. P.; and the runoff occurring during 25000-12000 a B. P., 12000-8000 a B. P., and 3000-0 a B.P. is respectively 43, 46 and 66 percent of the one occurring during 8000-3000 a B.P. Values of bankfull discharge for palaeochannels of the Yellow River flowing in this region during the same interval are calculated from available estimates of slope of stream-bed of these palaeochannels with a regression equation relating bankfull discharge to slope of stream-bed and ratios of bankfull-discharge are further calculated from these values for different groups of palaeochannel formed during different time spans embraced in this interval. To conduct a cross-check, these values and ratios of bankfull-discharge are compared to the corresponding values and ratios of runoff occurring during roughly the same time spans. The same direction and similar relative magnitude of changes of the surface water occurring in this region during the last 25000 years are indicated by these comparisons.
Deviated and Horizontal Wells Drilling Technology in Coal Seams
Ladislav Vizi,Marián Marcin,Ján Pinka
Acta Montanistica Slovaca , 2006,
Abstract: Drilling in coal seams becomes more and more popular at the present time, especially due to the fact that coal can be exploited not only by subsurface or surface mining methods but also in much cleaner way – underground coal gasification. The presented article is focused on the modern drilling technologies (used in drilling of deviated and horizontal wells needed for underground coal gasification), their advantages and drawbacks. The end of the article is dedicated to the method of the calculation of trajectory coordinates for a deviated well.
Microbiology research of the Chinese Continental Scientific Drilling: Isolation and identification of one bacterial strain from a 3900-meter-deep subsurface rocks
中国大陆科学钻探(CCSD)微生物研究——地下3900米一株细菌的分离与鉴定

WANG YuanLiang,LI GuangYu,DONG XiuZhu,DONG HaiLiang,YANG KeQian,DONG ZhiYang State Key Laboratory of Microbial Resources of Institute of Microbiology,Chinese Academy of Science,Beijing,China,
王远亮
,李光玉,东秀珠,董海良,杨克迁,董志扬

岩石学报 , 2005,
Abstract: A bacterial strain named CCSDFL3900 was isolated from a 3911. 28-meter-deep subsurface rock from the main borehole of Chinese Continent Scientific Drilling . It was Gram negative with no flagellalt has spores in the end, is immobile, facultative anaerobic, and grows optimally at 65 centigrade. Its 16S ribosome DNA was extracted and amplified with the universe primer of bacterial 16S ribosome DNA. Phylogenetic analysis results revealed that it belongs to the genus bacillus or geobacillus. Fermentation test further identified as it a strain of Bacillus caldotenax.
Spatial and Temporal Variations of Atmospheric Aerosol in?Osaka  [PDF]
Makiko Nakata,Itaru Sano,Sonoyo Mukai,Brent N. Holben
Atmosphere , 2013, DOI: 10.3390/atmos4020157
Abstract: It is well known that the aerosol distribution in Asia is complex due to both the increasing emissions of the anthropogenic aerosols associated with economic growth and the behavior of natural dusts. Therefore, detailed observations of atmospheric particles in Asian urban cities are important. In this work, we focus on the spatial and temporal variations of atmospheric particles around Higashi-Osaka in Japan. Higashi-Osaka is located in the eastern part of Osaka, the second-largest city in Japan, and is famous for small- and medium-sized manufacturing enterprises. For this study, we placed various ground measurement devices around the Higashi-Osaka campus of Kinki University including a Cimel sunphotometer supported by NASA/AERONET (Aerosol robotics network), suspended particulate matter (SPM) sampler and LIDAR (light detection and ranging). Individual particle analyses with a SEM (scanning electron microscope)/EDX (energy-dispersive X-ray analyzer) show the temporal variations of particle properties, such as size, shape and components, during a dust event on 21 March 2010. The simultaneous measurement using a portable sun photometer with AERONET was conducted from April to November 2011. A comparison of the data at each site and the combination of the observed LIDAR data and model simulations indicate the difference in the transportation processes between dust and anthropogenic particles. We suppose this difference is attributed to the differences in the vertical aerosol profiles, where one aerosol is transported over Mount Ikoma and the other is blocked by it.
Soil and Subsurface Sediment Microzonation Using with Seismic Refraction Tomography for Site Assessment (Case Study: IKIA Airport, Iran)  [PDF]
Khalil Rezaei
Open Journal of Geology (OJG) , 2016, DOI: 10.4236/ojg.2016.63016
Abstract: The site effects relating to the amplification of ground motion under earthquake loading are strongly influenced by both the subsurface soil condition and the geologic structure. In this study, for site characterization at the Imam Khomeini International Airport (IKIA) area in south of Tehran, in-situ seismic refraction tomography were carried out as a part of site investigations project, in addition geologic setting, borehole drilling, ground waters information and measurements. Based on seismic refraction studies, three layers are separable which with increasing in depth the S and P wave velocity is increased and this indicates increasing in compaction of soil and geologic materials. In the second and third separated layers, the zones with low and high seismic shear wave velocity is approximately equal, and northeast and southwest of the airport site has the low velocities, in addition to containing loose soils, highly weathered stones, and low depth to groundwater. In terms of Poisson’s ratio, the most important and key installations of airport site are located in suitable positions. According to Iranian Seismic Code, most of the lands around the airport are in class 2 and 3. It seems that a fault or a discontinuity is passed from northwest to the southeast of the study area. This site, according to geological, subsurface geophysical, and geotechnical boreholes studies, is high risk-earthquake prone.
Air temperature was associated with ambulance transports in Osaka area, Japan  [PDF]
Nobuyuki Miyatake, Noriko Sakano, Shoko Murakami, Takeshi Suzue, Takeshi Yoda, Akira Yoshioka, Tomohiro Hirao
Health (Health) , 2011, DOI: 10.4236/health.2011.39092
Abstract: We investigated the link between ambulance transports and meteorological parameters of summer by using daily data in Osaka area, Japan. Daily observations for ambulance transports (from July 1 to September 30, 2009) were obtained from Fire Department Service in Osaka. Data of meteorological parameters in Osaka area, Japan (from July 1 to September 30, 2009) were also obtained from Japan Meteorological Agency. Effect of meteorological parameters on ambulance transports was analyzed. A total of 49,526 ambulance transports were observed from July 1 to September 30, 2009 in Osaka, Japan. Ambulance transports were significantly correlated with mean air temperature (r = 0.298), the highest air temperature (r = 0.347), the lowest air temperature (r = 0.209) and daylight hours (r = 0.301). The higher air temperature was associated with higher ambulance transports of summer in Osaka area, Japan.
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