Tsunami threat to the Pacific coast of Canada due to local earthquakes     

Max Ng  Paul H. Le Blond  Tad S. Murty 《Natural Hazards》1992,5(2):205-210

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On counting the number of data pairs for semivariogram estimation     

Max D. Morris 《Mathematical Geology》1991,23(7):929-943

In planning spatial sampling studies for the purpose of estimating the semivariogram, the number of data pairs separated by a given distance is sometimes used as a comparative index of the precision which can be expected from a given sampling design. Because spatial data are correlated, this index can be unreliable. An alternative index which partially corrects for this correlation, themaximum equivalent uncorrelated pairs, is proposed for comparing spatial designs. The index is developed under the assumption that the underlying stochastic process is Gaussian and is appropriate when the (population) semivariogram is to be estimated by the sample semivariogram.  相似文献   

Zur Approximation von Laufzeitfunktionen aus diskreten Messwerten mit abgebrochenen Potenzreihen     

Priv.-Doz. Dr. Max Weber 《Pure and Applied Geophysics》1961,49(1):1-12

Zusammenfassung Es wird eine Approximation von Laufzeitfunktionen aus diskreten Messwerten mit abgebrochenen Potenzreihen behandelt. Zur bequemen Anwendung werden Tabellen berechnet. Der Beitrag schliesst mit einem Beispiel aus der Praxis.

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Summary An approximation to travel-time functions by restriced power series is treated. For numerical computations convenient tables are calculated and an example is given.

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III. Bücher- und Zeitschriftenschau     

Bubnoff  Wilckens  Otto Wilckens  W. Obrutschew  Max Richter  R. Stickel  Rudolf Leutelt  Leuchs  Hans Frebold  W. Salomon-Calvi 《International Journal of Earth Sciences》1931,22(3-4):241-271

Ohne Zusammenfassung  相似文献   

Zum zweihundertsten Geburtstage des ersten Alpengeologen,Horace Benedict de Saussure     

Max Pfannenstiel 《International Journal of Earth Sciences》1940,31(1-2):83-90

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Zur Morphologie von Westgriqualand (Südafrika)     

Max Richter 《International Journal of Earth Sciences》1937,28(3-4):243-249

Ohne Zusammenfassung  相似文献   

Streiflichter Ein Holzschnitt von Hans Holbein d. J. (?) aus dem Jahre 1523, frei umgedeutet als Sinnbild des Geologenwahlspruches „Mente et Malleo“     

Max Pfannenstiel 《International Journal of Earth Sciences》1937,28(6-7):550-555

Ohne Zusammenfassung  相似文献   

Authors' response     

Stephen C. Jewett  Max K. HobergThomas A. DeanBruce R. Woodin  John J. Stegeman 《Marine environmental research》2003,55(5):463-468

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A comment on “Calcic amphibole equilibria and a new amphibole — plagioclase geothermometer” by J.D. Blundy and T.J.B. Holland (Contrib Mineral Petrol (1990) 104: 208–224)     

Stefano Poli  Max W. Schmidt 《Contributions to Mineralogy and Petrology》1992,111(2):273-278

Conclusions The calibration by Blundy and Holland is not a calibration of the reaction albite + tremolite = edenite + 4quartz, because the Al^IV content of amphiboles is a combined result of substitutions.The requirements for a calibration of any of these substitutions are: (1) an amphibole-activity model unequivocally accounting for each substitution and (2) a data-set, wherein all amphiboles are buffered by the same assemblages.  相似文献   

Bulk organic δC and C/N as indicators for sediment sources in the Pearl River delta and estuary,southern China     

Fengling Yu  Yongqiang Zong  Jeremy M. Lloyd  Guangqing Huang  Melanie J. Leng  Christopher Kendrick  Angela L. Lamb  Wyss W.-S. Yim 《Estuarine, Coastal and Shelf Science》2010

Preservation of organic matter in estuarine and coastal areas is an important process in the global carbon cycle. This paper presents bulk δ¹³C and C/N of organic matter from source to sink in the Pearl River catchment, delta and estuary, and discusses the applicability of δ¹³C and C/N as indicators for sources of organic matter in deltaic and estuarine sediments. In addition to the 91 surface sediment samples, other materials collected in this study cover the main sources of organic material to estuarine sediment. These are: terrestrial organic matter (TOM), including plants and soil samples from the catchment; estuarine and marine suspended particulate organic carbon (POC) from both summer and winter. Results show that the average δ¹³C of estuarine surface sediment increases from −25.0 ± 1.3‰ in the freshwater environment to −21.0 ± 0.2‰ in the marine environment, with C/N decreasing from 15.2 ± 3.3 to 6.8 ± 0.2. In the source areas, C₃ plants have lower δ¹³C than C₄ plants (−29.0 ± 1.8‰ and −13.1 ± 0.5‰ respectively). δ¹³C increases from −28.3 ± 0.8‰ in the forest soil to around −24.1‰ in both riverbank soil and mangrove soil due to increasing proportion of C₄ grasses. The δ¹³C_POC increases from −27.6 ± 0.8‰ in the freshwater areas to −22.4 ± 0.5‰ in the marine-brackish-water areas in winter, and ranges between −24.0‰ in freshwater areas and −25.4‰ in brackish-water areas in summer. Comparison of the δ¹³C and C/N between the sources and sink indicates a weakening TOM and freshwater POC input in the surface sedimentary organic matter seawards, and a strengthening contribution from the marine organic matter. Thus we suggest that bulk organic δ¹³C and C/N analysis can be used to indicate sources of sedimentary organic matter in estuarine environments. Organic carbon in surface sediments derived from anthropogenic sources such as human waste and organic pollutants from industrial and agricultural activities accounts for less than 10% of the total organic carbon (TOC). Although results also indicate elevated δ¹³C of sedimentary organic matter due to some agricultural products such as sugarcane, C₃ plants are still the dominant vegetation type in this area, and the bulk organic δ¹³C and C/N is still an effective indicator for sources of organic matter in estuarine sediments.  相似文献