Stony Brook University School of Marine and Atmospheric

Stony Brook University School of Marine and Atmospheric Sciences http: //po. msrc. sunysb. edu/GSB

Great South Bay Observatory Funded by New York Department of State

Sensors deployed at the Bellport marina since 2004 Sea Bird Electronics “Sea. Cat”, SBE 16 and SBE 16 Plus Temperature and salinity Temperature, salinity, sea Level, chlorophyll and turbidity

April 9, 2005 C. Flagg

November 3, 2012 ~0900 EDT (~1300 GMT) C. Flagg and R. Giannotti

March 13, 2010 Hank Maust

Pre-inlet responses of the ocean and eastern bay to strong winds High waves can over-top the dunes Low salinity river waters enter the bay mean water level Waves scour the beach Bay waters flow up river

After the passage of Hurricane Irene, Aug. 28, 2011, ~1030 EDT C. Flagg

Pre-inlet responses of the ocean and eastern bay to strong winds High waves can over-top the dunes Low salinity river waters enter the bay mean water level Waves scour the beach Bay waters flow up river

Hurricane Sandy at Bellport Barometric Pressure Wind Speed North West South East North Wind Direction

Hurricane Sandy at Bellport Wind Speed Water level with Tides removed Salinity Normal range

Hurricane Sandy at Bellport

November 3, 2012 ~0900 EDT (~1300 GMT) C. Flagg and R. Giannotti

November 11, 2012, ~0830 EST (1330 GMT) C. Flagg and R. Giannotti

November 18, 2012 ~1200 EST (1700 GMT) R. Weissmann and R. Giannotti

November 29, 2012, ~0830 EST (~1330 GMT) C. Flagg and R. Giannotti

Different responses of the Bay to west winds pre and post inlet Water level, Tide removed Wind Speed Wind Direction Inlet

Post-inlet responses of the ocean and eastern bay to strong winds

Pre Inlet Post Inlet

Salient Points Bellport Bay's tidal range and phase have not been affected Response of the Bellport Bay to strong winds has been reversed but not necessarily increased in magnitude Water properties, ie salinity, have been altered and are more ocean-like due the increased exchange with the ocean