The study, which could take about a year, would come up with a full and final decision for the short and medium-term future of the port, Mr Brown said.
On the same day the port announced a return to profit after the industrial disruption of the year before, councillor Des Morrison said the study put a dampener on the new momentum and sent a poor message to the port company and its customers.
"We don't need a stage two study to allow this business to continue to grow and contribute to the economic growth we need,'' he said.
Devonport-Takapuna Local Board chairman Chris Darby said this was the direction that by far the majority of Auckland wanted given their great fondness of the Waitemata Harbour and Hauraki Gulf.
"We are not just a port city, we are a harbour edge city,'' Mr Darby said.
Heart of the City chief executive Alex Swney, whose group has been campaigning against further harbour reclamation said the mayor had drawn a line in the sand.
"He has heard Aucklanders' desire for something better than an expanded industrialisation. We are describing this as a defining decision of his mayoralty and as important as the city rail loop,'' Mr Swney said.