Die Gastiain-Struktur (Nordspanien)     

Dr. Herbert Lögters  Dr. Heinrich Voort 《International Journal of Earth Sciences》1968,57(2):455-472

Zusammenfassung Die Exploration nach Kohlenwasserstoffen in Nordspanien wird am Beispiel der Antiklinalstruktur Gastiain geschildert. Aufgrund geologischer Feldaufnahmen und seismischer Untersuchungen wurden 4 Tiefbohrungen niedergebracht, die jedoch keine wirtschaftlich verwertbaren Mengen von Kohlenwasserstoffen antrafen.Die Strukturgeschichte des Raumes Gastiain und die Gründe für das negative Ergebnis der Exploration werden diskutiert.

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The anticlinal structure of Gastiain is shown as an example of the exploration for hydrocarbons in Northern Spain. After geological surveys and seismic measurements, four wells were drilled, however with negative or at least not economic results.The structural history of the Gastiain region and the reasons for the negative result of the exploration are discussed.

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Résumé L'exploration d'hydrocarbure dans le Nord de l'Espagne est décrite par l'exemple de l'anticline de Gastiain. A l'aide de recherches géologiques et sismiques, quatre forages ont été forés, cependant sans trouver des quantités économiquement utilisables d'hydrocarbure.L'histoire de la structure de la région Gastiain et les raisons pour le résultat négatif de l'exploration sont discutées.

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Gastiain . 4 , . — .

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Herrn Professor Dr.Roland Brinkmann zum 70. Geburtstag gewidmet.  相似文献   

Calculated geochronology and stress field orientations along the Hawaiian chain     

Everett D. Jackson  Herbert R. Shaw  Keith E. Bargar 《Earth and Planetary Science Letters》1975,26(2):145-155

A new method has been discovered for calculating ages of the main shield building stages of volcanoes along the Hawaiian chain from Kilauea to the Hawaiian-Emperor bend. The method is based on a graphical technique for hypothetical subtraction of distance intervals that theoretically represent regions of simultaneous volcanism along adjacent or nearly en-echelon loci of volcanism. Distances along the chain, measured from Kilauea, when progressively foreshortened by the distances of hypothetical “collapse” and plotted versus existing age data are found to give linear age-distance relationships. A calibration graph is presented that agrees closely with the measured ages in 17 of the 20 existing dated volcanoes. The criterion for simultaneous activity on different loci is based on the concept of equal azimuths of synchronous volcanic propagation within coeval segments of the chain. This is the predicted relationship when magmatic fluids inject the lithosphere along directions normal to a nearly horizontal least principal stress. It appears that the Pacific plate has been subjected to oscillatory, but principally clockwise, rotations of horizontal stress components during the last 40 m.y.  相似文献   

A differential scheme for elastic properties of rocks with dry or saturated cracks   总被引：1，自引：0，他引：1  

James G. Berryman  Steven R. Pride  Herbert F. Wang 《Geophysical Journal International》2002,151(2):597-611

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Particle Tracking Analysis of Recharge Areas on Long Island, New York     

Herbert T. Buxton  Thomas E. Reilly  David W. Pollock  Douglas A. Smolensky 《Ground water》1991,29(1):63-71

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Surface aerosol measurements at Barrow during AGASP-II     

B. A. Bodhaine  E. G. Dutton  J. J. DeLuisi  G. A. Herbert  G. E. Shaw  A. D. A. Hansen 《Journal of Atmospheric Chemistry》1989,9(1-3):213-224

Measurements at Barrow during the second Arctic Gas and Aerosol Sampling Program (AGASP-II), conducted in April 1986, showed no rapid long-range transport from lower-latitude source regions to Barrow, and only limited vertical transport from above the boundary layer to the surface. New aerosol size distribution measurements in the 0.005–0.1 m diameter size range using a Nuclepore-filter diffusion battery apparatus showed a median diameter of about 0.01 m during times of high condensation nucleus (CN) concentrations. Aerosol black carbon concentrations exceeding 400 ng m^–3 were detected at the surface and were more strongly correlated with CN concentrations than with aerosol scattering extinction (_sp), suggesting that aerosol carbon was generally associated with small particles rather than large particles. Measurements at Barrow during AGASP-I, conducted in March–April 1983, showed a series of aerosol events detected at the ground that were caused by rapid long-range transport paths to the vicinity of Barrow from Eurasia. These events were strongly correlated with aerosol loading in the vertical column (optical depth).  相似文献   

In Situ Measurement and Numerical Simulation of Oxygen Limited Biotransformation     

Robert C. Borden  Michael D. Lee  J. Michele Thomas  Philip B. Bedient  C. Herbert Ward 《Ground Water Monitoring & Remediation》1989,9(1):83-91

Enhanced subsurface biorestoration is rapidly becoming recognized as a valuable tool for the restoration of hydrocarbon-contaminated aquifers and sediments. Previous field and laboratory studies at a former wood creosoting facility near Conroe, Texas, have indicated that insufficient oxygen is the primary factor limiting the biotransformation of polynuclear aromatics (PNAs) in sediments and ground water at this site. A series of laboratory experiments and field push-pull injection tests were performed as part of this project to: (1) study the effect of low oxygen concentrations on the biotransformation of PNAs; (2) identify the minimum concentration of PNAs that could be achieved through the addition of oxygen alone; (3) confirm that enhanced subsurface biorestoration is feasible at this site; and (4) test an existing numerical model of the biotransformation process (BIOPLUME). The laboratory studies demonstrated that biotransformation of the PNAs was not inhibited at dissolved oxygen concentrations as low as 0.7 mg/L although this work did suggest that there may be a minimum PNA concentration of 30 to 70 μg/L total PNAs below which biotransformation was inhibited. The field push-pull tests confirmed that addition of oxygen was effective in enhancing the subsurface biodegradation of the PNAs. The minimum concentration achieved using oxygen alone was approximately 60 μg/L total PNAs. Minimal biotransformation of these compounds was observed without oxygen addition. The numerical model BIOPLUME was tested against monitoring data from the field experiments and appears to provide a good approximation of the biodegradation process.  相似文献   

Die hydrographische Untersuchung des Kangerdlugssuaq (Westgrönland) im Rahmen der Internationalen Grönlandexpedition EGIG 1959     

Herbert Lüthje 《Ocean Dynamics》1989,42(2):81-101

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1990 Watershed Management Symposium Durango, Colorado, USA     

Stefan Wagner  Robert Hahn  Herbert Reichl 《GeoJournal》1989,18(4):458

Reports

1990 Watershed Management Symposium Durango, Colorado, USA  相似文献   

Reply: A simple theory for estimating well losses: With application to test wells in Bangladesh     

J. A. Barker  R. Herbert 《Hydrogeology Journal》1992,1(4):55-56

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The relationship between trends in a condition index of the American oyster,Crassostrea virginica,and environmental parameters in three Virginia estuaries     

Herbert Austin  Dexter S. Haven  Mary Sue Moustafa 《Estuaries and Coasts》1993,16(2):362-374

Oyster Condition Index (CI) was partitioned, using a moving average filter, into seasonal cycles and long-term trends in the James, York, and Rappahannock rivers for the period 1970–1983. Seasonal cyclic fluctuations in CI could be explained partially by changes in salinity and number of days within various temperature regimes. Long-term trends in the James River show a steady increase in CI over the study period, while a concurrent decline was noted in the Rappahannock River. Superimposed on these trends is a 4 to 5 yr cycle that is in synchrony with river discharge (salinity). In the York River, CI peaked in 1975–1976 at all stations. Measured environmental parameters do not sufficiently explain the trends. We speculate that the differences in the Rappahannock and James rivers may be due to a decline in bottom oxygen as a result of gravitational circulation differences.  相似文献