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Drewes, H.

Publications and source records attributed to Drewes, H..

4 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS2004

International GPS Service : 2001-2002 technical reports

Applications of the Global Positioning System (GPS) to Earth Science are numerous. The International GPS Service (IGS), a federation of government agencies and universities, plays an increasingly critical role in support of GPS-related research and engineering activities. Contributions from the IGS Governing Board and Central Bureau, analysis and data centers, station operators, and others constitute the 2001 / 2002 Technical Reports.

Feltens, J.↗
NASA NTRS1978

Investigations on vertical crustal movements in the Venezuelan Andes by gravimetric methods

A precise gravimetric network has been installed in the Venezuelan Andes to study eventual gravity changes due to vertical tectonic movements. The design and the measurements of the network are described and the accuracy is estimated. In the center of the region a local gravity network has been reobserved three times. The detected variations are discussed. In order to obtain a genuine statement as far as possible about the significance of observed gravity changes, requirements for the procedure of monitoring precise gravity networks are pointed out.

Drewes, H.↗