Extension verticale des alethopteridees et formes voisines dans le bassin du Nord et du Pas-de-Calais

1960 ◽  
Vol S7-II (5) ◽  
pp. 546-551
Author(s):  
Michel Buisine
Keyword(s):  
Vertical Distribution ◽  
Coal Basin ◽  
Northern France ◽  
Coal Measures ◽  
The Vertical Distribution

Abstract On the basis of examination of several hundred newly collected specimens of Carboniferous Alethopteridea and revision of previously collected material from the Nord-Pas-de-Calais coal basin, France, the vertical ranges of different species (Alethopteris, Lonchopteris, and Pecopteridium) are established precisely. The vertical distribution of these forms indicates that the coal measures of northern France can be divided into two major zones, with their boundary a little above the Rimbert marine horizon.

Classification et repartition verticale des pecopteridees dans le bassin houiller du nord de la France

1960 ◽  
Vol S7-II (5) ◽  
pp. 573-580
Author(s):  
Andre Dalinval
Keyword(s):  
Vertical Distribution ◽  
Coal Basin ◽  
Northern France ◽  
Different Types ◽  
History Of ◽  
The Vertical Distribution

Abstract The history of the definition and classification of the genus Pecopteris is reviewed, and the vertical distribution of species in the Carboniferous coal basin of northern France is summarized. Data on the different types of trunk and their relations with the fruits are included.

scholarly journals XVII.—On the Fossil Flora of the Radstock Series of the Somerset and Bristol Coal Field (Upper Coal Measures)

1888 ◽  
Vol 33 (2) ◽  
pp. 335-417 ◽  
Author(s):  
Robert Kidston
Keyword(s):  
Vertical Distribution ◽  
Fossil Flora ◽  
Coal Field ◽  
Public And Private ◽  
Coal Measures ◽  
Private Collections ◽  
The Vertical Distribution ◽  
Coal Fields

My attention for the last few years having been specially directed to the vertical distribution of the Carboniferous Fossil Flora, it is my intention to publish a series of papers dealing with this subject.While carrying on these investigations it has been necessary, in addition to visiting public and private collections, to visit several of the coal fields for the purpose of collecting specimens, as in almost no case have the smaller and less attractive species been secured, and, as a rule, only what strikes the ordinary collector as being “a fine specimen” is preserved, to the exclusion of many less striking but often more valuable examples. Hence our public collections, and, with few exceptions, also our private collections, give a very imperfect idea of the richness of the flora of the Carboniferous Formation of Britain.

The vertical distribution of tritium in water vapor in the lower troposphere

Tellus ◽  
1970 ◽  
Vol 22 (6) ◽  
pp. 699-706 ◽  
Author(s):  
Wayne E. Bradley ◽  
Glenn E. Stout
Keyword(s):  
Water Vapor ◽  
Vertical Distribution ◽  
Lower Troposphere ◽  
The Vertical Distribution

The vertical distribution of thin features over the Arctic analysed from CALIPSO observations. Part I: Optically thin clouds

Tellus B ◽  
2011 ◽  
Vol 63 (1) ◽  
Author(s):  
Abhay Devasthale ◽  
Michael Tjernström ◽  
Karl-Göran Karlsson ◽  
Manu Anna Thomas ◽  
Colin Jones ◽  
...  
Keyword(s):  
Vertical Distribution ◽  
The Arctic ◽  
The Vertical Distribution

scholarly journals Continuous borehole optical televiewing reveals variable englacial debris concentrations at Khumbu Glacier, Nepal

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Katie E. Miles ◽  
Bryn Hubbard ◽  
Evan S. Miles ◽  
Duncan J. Quincey ◽  
Ann V. Rowan ◽  
...  
Keyword(s):  
Vertical Distribution ◽  
Water Supply ◽  
Depth Profile ◽  
Variable Thickness ◽  
Surface Melting ◽  
High Mountain ◽  
Ablation Area ◽  
The Mean ◽  
Surface Melt ◽  
The Vertical Distribution

AbstractSurface melting of High Mountain Asian debris-covered glaciers shapes the seasonal water supply to millions of people. This melt is strongly influenced by the spatially variable thickness of the supraglacial debris layer, which is itself partially controlled by englacial debris concentration and melt-out. Here, we present measurements of deep englacial debris concentrations from debris-covered Khumbu Glacier, Nepal, based on four borehole optical televiewer logs, each up to 150 m long. The mean borehole englacial debris content is ≤ 0.7% by volume in the glacier’s mid-to-upper ablation area, and increases to 6.4% by volume near the terminus. These concentrations are higher than those reported for other valley glaciers, although those measurements relate to discrete samples while our approach yields a continuous depth profile. The vertical distribution of englacial debris increases with depth, but is also highly variable, which will complicate predictions of future rates of surface melt and debris exhumation at such glaciers.

A case study on the vertical distribution and characteristics of aerosols using ground-based raman lidar, satellite and model over Western India

2021 ◽  
Vol 42 (17) ◽  
pp. 6421-6436
Author(s):  
Sourita Saha ◽  
Som Sharma ◽  
K. Niranjan Kumar ◽  
Prashant Kumar ◽  
Vaidehi Joshi ◽  
...  
Keyword(s):  
Vertical Distribution ◽  
Western India ◽  
Raman Lidar ◽  
The Vertical Distribution
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