INTRO OCEANOGRAPHY OCEAN 200
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This 2 page Class Notes was uploaded by Aurore MacGyver Sr. on Wednesday September 9, 2015. The Class Notes belongs to OCEAN 200 at University of Washington taught by E. Armbrust in Fall. Since its upload, it has received 21 views. For similar materials see /class/192136/ocean-200-university-of-washington in Oceanography at University of Washington.
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Date Created: 09/09/15
Name KEY TA Oceanography 200 Spring 2008 Puget Sound Estuary Activity 15 pts You are a wastewater planner for Puget Sound and must rate the relative severity of impacts from disposing of sewage ef uent in different basins Sewage is usually discharged below the halocline so that it mixes well with ambient water before reaching the surface where it can contaminate beaches However the sewage discharge may aggravate lowoxygen conditions in the subsurface layer 1 Using the diagrams on 3207321 of SampA use the table below to fill in the essential characteristics of the four types of positive estuaries Estuary Estua Type Characteristics Salt wedge F ord Well m1xed Partlally m1xed Relative river input High High Low Moderate HighModerate Low Relative tidal mixing Low Low High Moderate HighModerate Low Haline stratification Strong Strong Weak Moderate StrongModerateWeak Slope of isohalines Sharp angle Horizontal Nearvertical Gradual angle wedge Special morphology Near large river Long Ushape Shallow maybe Open wide deep mouth narrow deep sill narrow The impact of deepdischarged sewage ef uent depends on ushing the rate at which water is replaced by net subsurface intrusion of ocean water amp its entrainment into the net surface out ow to the ocean 2 Using the map on the back ofthis page and the diagrams on 320321 of SampA use the table below to fill in the locations and essertial characteristics of the 4 types of posit ve estuaries in Puget Sound Location Name of Location Type of estuary Flushing Explanation Fast Medium Slow A Hood Canal Fjord Slow Sill amp shape reduce in ow of deep water B Admiralty Inlet Well mixed Fast Little river input amp strong mixing over series of sills C Whidbey Basin Salt wedge Slow Heavy river input weak tidal currents because of 1 80 turn D Main Basin Partially mixed Moderate Moderate river input wide amp open to tidal exchange E South Sound Complex inlets Slow Narrows silled outlet amp passages discharges to MB not ocean Depth ml 1 313 I l 194 41166 Eareta 9119 quot 1am quot r Bellingham 147172 17320 301533 3335 Unavailable 0 Nau Emu Min 35 7 a4 397 3 I Olympia E 3
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