Physical oceanographic observations in Marlborough Sounds

Abstract

Results of temperature and salinity observations with depth, current drogue measurements in Pelorus and Queen Charlotte Sounds, and a current meter record from Pelorus Sound are discussed. The circulation in both Sounds is mainly tidal. Salinities in Pelorus Sound were found to be lower than in Queen Charlotte Sound; there was a rapid decrease in salinity near the head of Pelorus Sound where the Pelorus and Kaituna rivers enter it. Residence time of water in Pelorus Sound was estimated to be about 21 days.