New finds of vertebrates in the Middle Devonian Brandenberg Group (Sauerland, Northwest Germany)

PalZ ◽  
1999 ◽  
Vol 73 (1-2) ◽  
pp. 113-131 ◽  
Author(s):  
Markus Otto
Keyword(s):  
Middle Devonian ◽  
Northwest Germany

SILICATE WEATHERING AND MIDDLE DEVONIAN PALEOCLIMATE

2020 ◽  
Author(s):  
Teresa D. Avila ◽  
◽  
Matthew R. Saltzman ◽  
Elizabeth M. Griffith ◽  
Michael M. Joachimski
Keyword(s):  
Middle Devonian ◽  
Silicate Weathering

THE DIVERSE BIOTA OF THE MILWAUKEE FORMATION (LATE GIVETIAN, MIDDLE DEVONIAN, WISCONSIN) AND ITS NEED FOR MODERN ANALYSIS

2020 ◽  
Author(s):  
Kenneth C. Gass ◽  
◽  
Joanne Kluessendorf ◽  
Donald G. Mikulic ◽  
Carlton E. Brett
Keyword(s):  
Middle Devonian ◽  
Modern Analysis

scholarly journals Ventilation of a Mid-Size City under Stable Boundary Layer Conditions: A Simulation Using the LES Model PALM

Atmosphere ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 401
Author(s):  
Jonathan Biehl ◽  
Bastian Paas ◽  
Otto Klemm
Keyword(s):  
Boundary Layer ◽  
Stable Boundary Layer ◽  
Passive Scalar ◽  
City Center ◽  
Street Canyons ◽  
Stable Boundary ◽  
Northwest Germany ◽  
Stable Conditions ◽  
Les Model ◽  
The City

City centers have to cope with an increasing amount of air pollution. The supply of fresh air is crucial yet difficult to ensure, especially under stable conditions of the atmospheric boundary layer. This case study used the PArallelized Large eddy simulation (LES) Model PALM to investigate the wind field over an urban lake that had once been built as a designated fresh air corridor for the city center of Münster, northwest, Germany. The model initialization was performed using the main wind direction and stable boundary layer conditions as input. The initial wind and temperature profiles included a weak nocturnal low-level jet. By emitting a passive scalar at one point on top of a bridge, the dispersion of fresh air could be traced over the lake’s surface, within street canyons leading to the city center and within the urban boundary layer above. The concept of city ventilation was confirmed in principle, but the air took a direct route from the shore of the lake to the city center above a former river bed and its adjoining streets rather than through the street canyons. According to the dispersion of the passive scalar, half of the city center was supplied with fresh air originating from the lake. PALM proved to be a useful tool to study fresh air corridors under stable boundary layer conditions.

scholarly journals Species of the Devonian aulacopleurid trilobite Cyphaspides from southeastern Morocco

2019 ◽  
Vol 94 (1) ◽  
pp. 99-114
Author(s):  
Brian D.E. Chatterton ◽  
Stacey Gibb ◽  
Ryan C. McKellar
Keyword(s):  
New Species ◽  
Middle Devonian ◽  
Present Contribution ◽  
Three New Species ◽  
Emended Diagnosis

AbstractThree new species of Cyphaspides are proposed: C. ammari, C. nicoleae, and C. pankowskiorum. These species are based on specimens obtained from Middle Devonian (Eifelian) strata of the Bou Tchrafine Group, near Erfoud, in the Province of Errachidia, southeastern Morocco. The present contribution enhances our knowledge of Cyphaspides by providing details of three new species that are based on well-preserved, complete, and articulated types. The genus Cyphaspides is discussed, and an emended diagnosis is provided. The paleobiogeography, ontogeny, and relationships of the genus are discussed.UUID: http://zoobank.org/4a7aab8f-8c8e-4498-9cc2-6f8c69b85213

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