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Global Ocean Acoustical Observation System Global Ocean Acoustical Observation System Brian D. Dushaw Applied Physics Laboratory, University of Washington IOOS: The oceanographic community is building the operational “Integrated Ocean Observing System.” Supported by U.S. Department of Commerce/NOAA. OOI: The “Ocean Observatories Initiative” is enhancing research – long-term observatioons; novel ocean presence. Supported by the National Science Foundation. Acoustical applications in these aare minimal , opportunistic, eclectic, disorganized... Question: Does IQOE want to integgg,rate with the existing, formal “Ocean Observing System” (sustained observations of immediate societal benefit)? Is it aimed at long-term research questions (an additional component of the OOI)? Or should IQOE “go it alone,” e.g., the Ocean Tracking Network? Acoustic Thermometry of Ocean Climate There are no technical or environmental impediments to implementing these observations. It has been demonstrated that this data type is unique, providing information not avvailable by other means. Notional set of paths shown IOOS/GOOS IOOS: Integrated Ocean Observing System e. g., NANOOS: Northwest Association of Networked Ocean Observing Systems GOOS: Global Ocean OObserving System The OOS's are long-term systems for providing a wide range of real-time ooceanic information to diverse customers. Funding from Local and Sttate Agencies, NOAA, the U.S. Dept. of Commerce, et al. Draws on all available sustained oceanic observations. Requires a data management and communication (DMAC) plan. Regional Observing Systems (U.S.) Northwest Association of Networked Ocean Observing Systems Idea #1 A Plethora of Small-Scalee, Regional Observations Define science plans around regg,ional needs, of “immediate societal benefit.” Approach the regional OOOSes, implement many local acoustical observing systems according to local needs.,,( (e.g . Wind farms,,y,) oil industry, etc.) Can draw on all other available sustained environmental observations. Plugs into existing programs, implement standards across OOSes. (no needd to reinvent wheels... ) KEY POINT: A data management and communiti(DMAC)ication (DMAC) ppllian is requ idired. Ocean Observatories Initiative / Regional Cabled Observvatory The OOI is aimed at enhancing research capabilities – long-term observations; novel ocean presence. Components “Regional Scale Nodes” Cabled System: Neptune; and also Neptune Canada, VENUS (Juan de Fuca plate, Puget SSound). “Global Nodes”: ~ 5 sustained moorings scattered over the world's oceans. “Coastal Nodes”: Including relocatable “Pioneer Array” • Provide power and communications. • Platforms/data that PI's can propose to work from/with. Ocean Observatories Initiative Idea #2 A Noisy v. Quiet Ocean CComparison Experiment North of Hawaii is much nooisier than south of Hawaii. Instrument the Aloha Cabled Observatory north of Oahu with a mid-water coluumn hydrophone array . Add a similar system south of Oahu. Compare and contrast the noisy north with the quiet south. (Problem...the environments are not really the same.) An example of a scientific pplan built on the OOI. KEY POINT: Trans-ocean optical cables can be used to est abli s h permanen t presence. “Global” and “Coastal” Nodes (We seem to be having trouble convincing folks that time keeping to 1 s accuracy is not good enough.) Neptune Canada, VENUS Neptune – The “RCN”s Idea #3 DEOS, Mark II: Monitorinng an Ocean Basin The “Deep Earth Observingg System” (DEOS) was one of the original intents of the OOI, but geophysics was pushed aside. Implement the DEOS idea: Select a few sites in the ccenter of ocean basins. Deploy sustained platforms of vertical and horizontal hyypdrophone arraayys around the sound channel axis. Monitors the soundscape oof an entire ocean basin. KEY POINT: Geophysicists would kiss IQOE. Natural alliances like this are keys to success. Idea #4 The Arctic Ocean: Monit toring an Ocean Basin The Arctic is undergoing ddramatic environmental changes. The Arctic is opening to huuman activities, some perhaps not so nice. This is a un ique oppor tun iity in his tory to mon itor these changes acoustically. Monitor the changing/evolving soundscape of this unique ocean basin. KEY POINT: Implementing IQOE in the Arctic would be a ggpreat boost to present ppplans to implement acoustical components to the Arctic OOS. 2012 Ocean Sciences Conference Topical SSession American Geoophysical Union The Oceanography Society ALLSO Acoustical Applications for Ocean Observing Systems 20-24 February 2012 Salt Lake City, UT USA Bruce Howe, Sue Mooore, Brandon Southall Co-Chairs Abstracts due October 7, 2011 Comments IQOE should decide on its strattegic relationship with the formal OOS/OOI. There are long-term implications... Present infrastructure can be taaken advantage of: abandoned undersea cables, CTBO receivers, IOOS data management technology, Weddell Sea PALAOA/PAM arrays, Aloha Cabled Observatory, Regional cabled nnodes of the OOI, glider - hydrophones, float-hydrophones, etc., etc. (Need a census?) Instruments off of the sea floor are better, but harder. Draw on support from other disciplines (geophysics) to forge a broader program of shared resources. Do not neglect the advantages of active acoustic sources for ocean observation – forge a broader program than “QO”? The Arctic region has some real attraction right now. A “Data Management and Commmunications” plan, with standards for acquisition, long-term archival and retrieval of acoustical data, is required. GldDGold: Dep loye dPAMd PAM recor ders, suppltPALAOAilement PALAOA receivers. Green: Planned recorders Moorings also have CTD, ADCP, etc. Long-term deployment – 5-years? Olaf Boebel - AWI.
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