Mitarbeit in Ausschüssen 
115 
4.3.4 International - nichtstaatllch 
European Association of Remote Sensing Laboratories (EARSeL) 
Working Group "SEASAT Users Research Group of Europe" (SURGE): Strübing 
Federation of Astronomical and Geophysical Services (FAGS) 
Prof. Dr.-Ing. Enslin 
International Geological Correlation Project 
Holocene Sea Level Project: Dr. Figge 
International Omega Association (IOA) 
Petersen 
Internationale Astronomische Union (IAU, International Astronomical 
Union) 
Commission on Time: Prof. Dr.-Ing. Enslin 
Commission on Rotation of the Earth: Prof. Dr.-Ing. Enslin (Organisa- 
tionskomitee) 
Internationale Union für Geodäsie und Geophysik (IUGG, International 
Union of Geodesy and Geophysics) 
Organisationskomitee für die XVIII. Generalversammlung (Hamburg, 1983): 
Heise, Koltermann, Rudloff, Prof. Voppel 
International Association of Geomagnetism and Aeronomy (IAGA) 
Working Group "Geophysical Indices": Prof. Voppel 
Working Group "Ground-Based Measurements for Geomagnetic Satellite 
Surveys": Prof. Voppel 
Internationale Vereinigung der Vermessungsingenieure (FIG, Fédération 
Internationale des Géomètres) 
Commission IV (Hydrographic Surveys): Dr.-Ing. Bettac 
Working Group Data Acquisition and Processing: Dr.-Ing. Bettac 
Working Group Positioning Systems: Prof. Dr.-Ing. Schrick 
Working Group Detection of Depth Anomalies: Berger 
Internationale Kartographische Vereinigung (IKV) 
Commission on Oceanic Cartography: Dr.-Ing. Bettac