Plattform Platform	Reise-Nr. Cruise-No.	Zeitraum Period	Projekt Project	Arbeitsgebiet Working area
Aranda	2/2005 Seaice2005	07.03.2005 - 18.03.2005	CRYOSAT	Bay of Bothnia

Fahrtleiter Chief Scientist	Institut Institute	Auslaufhafen Port of departure	Einlaufhafen Port of return	Stationskarte Station map	Schiffsroute Trackchart
Haapala Jari	Finnish Institute of Marine Research	Helsinki	Helsinki

Ziel der Reise / Objectives of Cruise:

This cruise focused on the sea-ice research. The aim was to collect in-situ and airborne data for i) validation the ASIRAS (Airborne Synthetic Aperture Interferometric Radar Altimeter System), ii) validation of the IRIS route selection routine and operational sea-ice models, and iii) validation of ridged ice detections algorithms of the ASAR data. \nIn-situ observations were made in the North-East region of the Bay of Bothnia. An ice station was established in the vicinity of Aranda. Calibration lines for the airborne measurements were established and the in-situ measurements were made along the calibration lines. Following measurements will be made with 1 - 300 meters intervals : ice thickness drilling with augers and hot-water drills, estimation of the mean density (or void fraction) of the ridges, ice thickness profiling with a sledged Geonics EM-31 instrument. freeboard profiling, snow thickness and density, salinity and structure measurements of the ice and snow.

Messungen / Measurements