Quantifying Dynamic Characteristics of Dune Migration in Northwestern China with Multitemporal Optical Satellite Observations

Author(s):  
Chao Ding ◽  
Mingsheng Liao ◽  
Lu Zhang ◽  
Jie Dong ◽  
Guangcai Feng
1975 ◽  
Vol 26 ◽  
pp. 461-468
Author(s):  
S. Takagi

In this article, we intended to see whether we can obtain the same pole motion from two kinds of telescopes: the floating zenith telescope (PZT) and the ILS zenith telescope (VZT). The observations with the PZT have been pursued since 1967.0 with a star list whose star places are taken from the PK4 and its supplement. We revised the method of reduction of the observations with the PZT by adopting a variable scale value for the photographic plate (Takagi et al., 1974).


Sign in / Sign up

Export Citation Format

Share Document