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## Application of computer techniques in Polish geology

### Journal of the International Association for Mathematical Geology (1974-09-01) 6: 259-262 , September 01, 1974

## Gradient mapping of pattern ground characteristics from a photomosaic of the IBP tundra biome site near Barrow, Alaska

### Journal of the International Association for Mathematical Geology (1974-09-01) 6: 235-244 , September 01, 1974

*An air photographic mosaic covering an area of 44.5×10*
^{5} m^{2} was subdivided into 741 rectangular cells (60×100 m). Pattern frequency, center relief, shape, and wedge image clarity were tabulated using three states for each character on a nominal scale. These state variables were converted to an interval scale by the application of a spatial smoothing filter. The new values were subjected to a principal components analysis which indicated that a parsimonious classification of pattern spatial variation could be constructed by equally weighting the first three nominal variables (frequency, relief, shape). The maps derived from this scheme indicate the areas on the tundra surface where polygon evolution may be occurring at the present time.

## Nature and origin of microphenocrysts in a basalt

### Bulletin Volcanologique (1974-03-01) 38: 65-72 , March 01, 1974

In the upper 4 cm of a basaltic lava 2 kilometers from its source there is little or no significant change in the size, shape, number, and volume of plagioclase microphenocrysts. A maximum rate of clongation of 0.04 micrometers per second would be consistent with the data. These facts suggest that the microphenocrysts developed prior to extrusion, probably during ascent and efferveseence.

## Determining the coefficients of cohesion and angles of internal friction of inhomogeneous rocks

### Soviet Mining (1974-07-01) 10: 504-506 , July 01, 1974

## Relations entre magmas volcaniques et zones séismiques dans les arcs Honshu et Hokkaido

### Bulletin Volcanologique (1974-09-01) 38: 988-997 , September 01, 1974

The relationship between chemical composition of volcanic rocks and vertical depth from the volcano to the inclined seismic zone has been investigated by some authors only recently.

Under a typical volcanic are, the seismofocal layer shapes an arch and the average depth of seismic foci increases progressively from the center. Such archs are observed in Honshu and Hokkaido and our object is to test in these regions a progressive magmatic evolution as a function of depth by taking into account the complete set of major elements using the correspondence analysis.

There appears to be a definite relationship between seismofocal zone processes in the upper mantle and volcanic activity not only in the direction of the subduction zone transverse to an island are but also in the longitudinal right direction of this are.

## Use of radioisotope methods for investigation of submarine deposits

### Soil Mechanics and Foundation Engineering (1974-09-01) 11: 334-338 , September 01, 1974

## Ein Rechenverfahren zur Bestimmung der Wassertemperatur eines Flusses

### Archiv für Meteorologie, Geophysik und Bioklimatologie, Serie A (1974-09-01) 23: 371-391 , September 01, 1974

### Zusammenfassung

Durch Vereinfachungen in den Formeln für den Strahlungsgenuß von Sonne und Himmel, für die Energieumsätze bei Verdunstung, Kondensation und beim konvektiven Wärmeaustausch mit der Luft ist es möglich, die zunächst nur numerisch integrierbare Wärmehaushaltsgleichung eines Flusses analytisch zu lösen. Besondere Beachtung wird dem Einfluß des natürlichen Horizontverlaufs gewidmet, und auch die Tatsache, daß bei einem Fluß infolge seiner Temperaturdifferez zur Umgebung die Ausstrahlungsverhältnisse kompliziert werden, wird berücksichtigt. Es wird die Berechnung für einen sommerlichen Schönwettertag durchgeführt und der Fehler, der durch die Nichtberücksichtigung des natürlichen Horizontverlaufs entsteht, am Beispiel des Kamp-Flusses in Niederösterreich aufgezeigt.

## A baroclinic planetary boundary-layer model, and its application to the Wangara data

### Boundary-Layer Meteorology (1974-01-01) 5: 459-473 , January 01, 1974

Nondimensional parameters characteristic of the *outer* part of the planetary boundary layer have been determined by fitting a simple, Ekman-type theory to a number of averaged, observed velocity distributions, using the Wangara data of Clarke *et al.* (1971). The theoretical model is based on constant eddy viscosity in the outer layer and a linear variation of the geostrophic wind with height. At the lower boundary of the outer layer, the condition is applied that stress and velocity are parallel. This yields an equation for the cross-isobar angle as a function of drag coefficient, depth coefficient and nondimensional thermal wind.

The data could be sorted into three well-defined, distinct groups, each characterized by a more or less constant value of the depth coefficient. The group with the lowest value of this parameter contains most of the nighttime data, the middle group the remaining nighttime data and most of the daytime ones, and the group with the largest depth, daytime data with cold air advection. The difference between the lowest and highest depth coefficients found here is about a factor of three.

Within each group separately, the theoretically derived cross-isobar angle agrees remarkably well with the observed one, as a function of thermal wind.

## Evolution of giant chloride nuclei size spectrum on the seashore

### Archiv für Meteorologie, Geophysik und Bioklimatologie, Serie A (1974-03-01) 23: 77-86 , March 01, 1974

### Summary

The paper presents a contribution to the deduction of the distribution function of cloud condensation nuclei in a maritime atmosphere depended on supersaturation. The calculation is based on the Nukyiama-Tanassava distribution function and on the data deduced from the measurement of giant chloride nuclei concentration with a cascade impactor on the seashore. The supersaturation distribution function found was a decreasing function unlike the same relationship calculated using Junge's distribution law.

## Alkali amphiboles intermediate in composition between actinolite and riebeckite

### Contributions to Mineralogy and Petrology (1974-12-01) 46: 257-264 , December 01, 1974

Alkali amphiboles of an intermediate composition in the magnesioriebeckite-eckrite series have been found in the metamorphic terrane of Leros Island. A complete compositional gradation has been demonstrated by a series of electron microprobe scans and analyses of spots. Electron microscopic examination revealed no exsolution.

The present analyses and other data indicate a closing of the Na-Ca amphiboles gap towards the magnesian end members at temperatures higher than that usually associated with the blueschist facies.