Preliminary results of the study on wind erosion in the Qinghai-Tibetan Plateau using137Cs technique

2000 ◽  
Vol 45 (11) ◽  
pp. 1019-1025 ◽  
Author(s):  
Ping Yan ◽  
Guangrong Dong ◽  
Xinbao Zhang ◽  
Yiyun Zhang
Keyword(s):  
Tibetan Plateau ◽  
Wind Erosion ◽  
Preliminary Results

Tibetan Plateau Seismic Experiment: Design and Preliminary Results, 1992-1993

1995 ◽  
Vol 4 (4) ◽  
pp. 199-201
Author(s):  
M. Jiang ◽  
A. Hirn ◽  
G. Poupinet
Keyword(s):  
Tibetan Plateau ◽  
Experiment Design ◽  
Preliminary Results ◽  
Seismic Experiment

Wind erosion on the north-eastern Tibetan Plateau: constraints from OSL and U-Th dating of playa salt crust in the Qaidam Basin

2013 ◽  
Vol 39 (6) ◽  
pp. 779-789 ◽  
Author(s):  
Wenxia Han ◽  
Zhibang Ma ◽  
Zhongping Lai ◽  
Erwin Appel ◽  
Xiaomin Fang ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Wind Erosion ◽  
Qaidam Basin ◽  
Eastern Tibetan Plateau ◽  
The North ◽  
Salt Crust ◽  
North Eastern

Preliminary results of using137Cs to study wind erosion in the Qinghai-Tibet Plateau

2001 ◽  
Vol 47 (4) ◽  
pp. 443-452 ◽  
Author(s):  
Yan Ping ◽  
Dong Zhibao ◽  
Dong Guangrong ◽  
Zhang Xinbao ◽  
Zhang Yiyun
Keyword(s):  
Wind Erosion ◽  
Tibet Plateau ◽  
Preliminary Results ◽  
Qinghai Tibet Plateau

Spatiotemporal distribution and variation of wind erosion over the Tibetan Plateau based on a coupled land-surface wind-erosion model

2021 ◽  
Vol 50 ◽  
pp. 100699
Author(s):  
Yingsha Jiang ◽  
Yanhong Gao ◽  
Cenlin He ◽  
Benli Liu ◽  
Yongjie Pan ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Land Surface ◽  
Wind Erosion ◽  
Surface Wind ◽  
Spatiotemporal Distribution ◽  
The Tibetan Plateau ◽  
Erosion Model

The O–C diagrams of minor planets − a new approach to modelling the rotation

1999 ◽  
Vol 173 ◽  
pp. 185-188
Author(s):  
Gy. Szabó ◽  
K. Sárneczky ◽  
L.L. Kiss
Keyword(s):  
Error Analysis ◽  
Time Dependence ◽  
Theoretical Work ◽  
Minor Planet ◽  
Minor Planets ◽  
New Approach ◽  
Preliminary Results ◽  
Ccd Observations

AbstractA widely used tool in studying quasi-monoperiodic processes is the O–C diagram. This paper deals with the application of this diagram in minor planet studies. The main difference between our approach and the classical O–C diagram is that we transform the epoch (=time) dependence into the geocentric longitude domain. We outline a rotation modelling using this modified O–C and illustrate the abilities with detailed error analysis. The primary assumption, that the monotonity and the shape of this diagram is (almost) independent of the geometry of the asteroids is discussed and tested. The monotonity enables an unambiguous distinction between the prograde and retrograde rotation, thus the four-fold (or in some cases the two-fold) ambiguities can be avoided. This turned out to be the main advantage of the O–C examination. As an extension to the theoretical work, we present some preliminary results on 1727 Mette based on new CCD observations.

Cyclic Evolution of Sunspots: Gleaning New Results from Old Data

2000 ◽  
Vol 179 ◽  
pp. 163-165
Author(s):  
S. K. Solanki ◽  
M. Fligge ◽  
P. Pulkkinen ◽  
P. Hoyng
Keyword(s):  
Sunspot Number ◽  
Sunspot Cycle ◽  
Preliminary Results ◽  
Butterfly Diagram

AbstractThe records of sunspot number, sunspot areas and sunspot locations gathered over the centuries by various observatories are reanalysed with the aim of finding as yet undiscovered connections between the different parameters of the sunspot cycle and the butterfly diagram. Preliminary results of such interrelationships are presented.

Systematic effects in observed parallaxes

1978 ◽  
Vol 48 ◽  
pp. 31-35
Author(s):  
R. B. Hanson
Keyword(s):  
Error Estimates ◽  
Zero Point ◽  
Absolute Zero ◽  
Apparent Magnitude ◽  
Coherent System ◽  
Preliminary Results ◽  
General Catalogue ◽  
Systematic Effects ◽  
New Evidence ◽  
Right Ascension

Several outstanding problems affecting the existing parallaxes should be resolved to form a coherent system for the new General Catalogue proposed by van Altena, as well as to improve luminosity calibrations and other parallax applications. Lutz has reviewed several of these problems, such as: (A) systematic differences between observatories, (B) external error estimates, (C) the absolute zero point, and (D) systematic observational effects (in right ascension, declination, apparent magnitude, etc.). Here we explore the use of cluster and spectroscopic parallaxes, and the distributions of observed parallaxes, to bring new evidence to bear on these classic problems. Several preliminary results have been obtained.

Quantitative Measurements on the Ion Etching of TMV

1973 ◽  
Vol 31 ◽  
pp. 336-337
Author(s):  
Irwin Bendet ◽  
Nabil Rizk
Keyword(s):  
Electron Microscope ◽  
Tobacco Mosaic Virus ◽  
Mosaic Virus ◽  
Ion Current ◽  
Beam Diameter ◽  
Ion Etching ◽  
Preliminary Results ◽  
Quantitative Measurements ◽  
Monitoring Devices

Preliminary results reported last year on the ion etching of tobacco mosaic virus indicated that the diameter of the virus decreased more rapidly at 10KV than at 5KV, perhaps reaching a constant value before disappearing completely.In order to follow the effects of ion etching on TMV more quantitatively we have designed and built a second apparatus (Fig. 1), which incorporates monitoring devices for measuring ion current and vacuum as well as accelerating voltage. In addition, the beam diameter has been increased to approximately 1 cm., so that ten electron microscope grids can be exposed to the beam simultaneously.

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