WESTERN ARCTIC SHELFBASIN INTERACTIONS SBI

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WESTERN ARCTIC SHELF-BASIN INTERACTIONS
(SBI) PHASE 2 PI MEETING FIELD PROJECT
OVERVIEW Jacqueline M. Grebmeier SBI Project
Office, University of Tennessee Knoxville,
Tennessee, 37932, USA USCGC
Healy Seattle, Washington January 29-30,
2000 http//sbi.utk.edu
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SBI Goal and Focus

• Overall hypothesis climate change will
  significantly and preferentially impact the
  physical and biological linkages between arctic
  shelves and the adjacent ocean basins
• Focus area
• outer shelf, shelf break and upper slope, where
  key processes control water mass exchange and
  biogeochemical cycles
• greatest responses to climate change are
  expected
• US SBI focus is Chukchi and Beaufort seas and
  slopes

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General schematic of SBI study area and research
topics
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(No Transcript)
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SBI PHASE II PROJECTS-PI/CO-PI'S (n42) AND
PROJECT TITLES (n14)

• Ashjian, Carin-WHOI, Gallager, Scott-WHOI, and
  Gallagher, Scott-LSU, Collaborative Research
  Shelf-Basin Exchange of Biogenic Material Between
  the Chukchi and Beaufort Seas
• Christensen, John, and Devol, Allan-UW,
  Collaborative Proposal Denitrification and
  Sediment Nutrient Dynamics in the Chukchi and
  Beaufort Seas summer 2002 and spring 2004
• Dirks, Richard-JOSS/UCAR, and Moore,
  James-JOSS/UCAR, Data Management Support for
  Western Arctic SBI Phase II
• Gradinger, Rolf-UAF and Eicken, Hajo-UAF,
  Physical-biological control of primary
  production in Beaufort and Chukchi Sea ice Its
  contribution to shelf-basin interactions in the
  western Arctic
• Grebmeier, Jackie-UTK, Cooper, Lee-UTK, Cota,
  Glenn-ODU, Dunton, Kenneth-UTX, Kirchman,
  Dave-UDL, Maslowski, Wieslaw-NPS, Moran,
  Bradley-URI, and Walsh, John J.-USF,
  Collaborative SBI Research Carbon Cycling in
  the Chukchi and Beaufort Seas-Field and Modeling
  Studies
• Hansell, Dennis-U Miami, and Bates,
  Nicholas-BBS, Collaborative Research Transport
  and Transformations of Carbon and Nitrogen in the
  Western Arctic Ocean A Contribution to the SBI
  Project
• Harvey, Roger-UMD, Macdonald, Robie-IOS, and
  Benner, Ronald-USC, Collaborative Research
  Biogeochemical Cycling of Particulate and
  Dissolved Organic Matter in the Arctic Ocean
  using Molecular Markers
• Kadko, David-U Miami, Investigation of the Rate
  of Shelf-Basin Interaction in the Western Arctic
  Using Radium Isotopes SBI Phase II
• Sherr, Evelyn-OSU, Sherr, Barry-OSU, Campbell,
  Robert-URI, and Ashjian, Carin-WHOI,
  Collaborative Research Mesozooplankton-Microbial
  Food Web Interactions in Western Arctic Shelf
  and Basin Regions
• Smith, Sharon-U Miami, and Fell, Jack-U Miami,
  Shelf-Basin Exchange of Large-Bodied Zooplankton
  Copepods in the Chukchi and Beaufort Seas
  summer 02, spring and summer 2004

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SBI Field Program

• 2002 and 2004
• USCGC HEALY
• 6 May-15 June (Nome-Nome, AK)
• 17 July-26 August (Nome-Nome, AK)
• USCGC POLAR STAR
• July (Dutch Harbor-return, AK)
• RV ALPHA HELIX
• 23-27 June (Dutch Harbor-Nome, AK)
• 2003
• USCGC/TBD
• 1-30 July (Nome-Nome, AK)
• RV ALPHA HELIX
• September

USCGC HEALY
USCGC POLAR STARSEA
USCGC POLAR STAR
RVALPHA HELIX
RV ALPHA HELIX
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SBI Phase II-Field Program
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SBI Service Field Measurements

• SERVICE FIELD MEASUREMENTS (Swift et al.)
• CTD-based temperature, salinity and dissolved
  oxygen measurements (Swift)
• Acoustic Doppler Current Profiler (ADCP) data
  (Padman, Münchow)
• In situ-fluorescence and transmissivity
• Photosynthetic active radiation (PAR)
  measurements
• Rosette for discrete water sampling
• Determination of inorganic nutrients (nitrate,
  nitrite, phosphate, dissolved silicon, ammonium)
  (Whitledge, Codispoti), chlorophyll-a (Whitledge
  Stockwell), salinity, and dissolved oxygen
  (Swift)
• Underway surface observations, including
  temperature, salinity and meteorological data
  (Swift et al.)

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Service Program
CTD Rosette Swift et al. 4 casts with two
12-10L and two 12-30L bottle configurations
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SBI Process Studies-Water Column (10 projects,
plus service measurements)

• RATE MEASUREMENTS FOR PROCESS CRUISES (details in
  SBI water column sampling spreadsheet in meeting
  folder)
• Primary production, nutrient uptake, biomass,
  pigments, optics (Cota)
• Stable oxygen isotopes (Cooper)
• POC/N, DOC/N, DIC (Hansell and Bates)
• Bacterial production, biomass, respiration
  (Kirchman)
• Microzooplankton biomass and grazing (Sherr and
  Sherr)
• Biomarkers (Harvey and Benner)
• Sediment metabolism (Grebmeier)
• Denitrification (Christensen/Devol)
• Radium isotopes (Kadko)

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Active optical sensor Passive
optical sensor
Glenn Cota primary production, optics, satellite
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On deck incubator for dilution assays
36 inches
 
     
Inflow buffer
52 inches
Lexan tube, 6 diameter x 22 long, holes
drilled in sides to allow water flow
Ashjian, Campbell, Sherr(s)-zooplankton
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Deck incubators for zooplankton
studies
Seawater hoses out
Wooden base
Seawater hoses in
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Clear hinged lexan top with hinges to keep water
in
12 inches high
Zooplankton component-deck incubator
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SBI-Macro/Meso Zooplankton Field Studies (4
projects)

• Macro-zooplankton biomass and production
  (Ashjian and Campbell, Smith and Lane)
• Zooplankton abundance via sensors on CTD
  (Ashjian, Gallagher Benfield)
• C-13, N-15 stable isotope analyses of
  macro/meso-zooplankton (Dunton)

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Ring Net

• Carin Ashjian/Bob Campbell (zooplankton)
• Our ring nets will be 1m in diameter and up to 6
  m long
• Used for
• Vertical tows (ship stationary)
• Oblique tows (ship moving)
• Used off the side of the ship

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Bongo Nets

• Sharon Smith/Peter Lane (zooplankton)
• Deployed off the side
• Towed either vertically (ship stationary ice) or
  obliquely (ship moving no ice)

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MOCNESS

• Deployed off stern using 0.68 conducting wire

MOCNESS being deployed
MOCNESS ready on deck
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SBI Benthic Field Studies (5 projects

• Benthic macrofaunal biomass (Grebmeier)
• C-13, N-15 of benthic fauna (Dunton)
• Benthic metabolism (Grebmeier and Cooper)
• Denitrification (Christensen and Devol)
• Biomarkers, sediment DOC flux w/Grebmeier
  (Harvey and Benner)
• Sedimentation rates and mixing Th-234, Pb-210
  (Moran)

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Van Veen (Grebmeier and Cooper)
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HAPS Corer
HAPS Multicorer
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Coring sectioning and Canning
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Multi-corer, Soutar core, and off-ice
mini-lander (John Christensen and Al Devol)
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SBI Off-ship Field Studies

• denitrification/sediment metabolism (Christensen
  and Devol)
• sea ice algal production and physical properties
  (Gradinger and Eicken)
• off-ship access needed for both projects
  deployment on ice at start of station via basket
  or helicopter operations, as necessary if by
  helicopter, possible coordination with USWFS
  objectives

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Ice sampling ice algae and properties (Rolf
Gradinger and Hajo Eicken)
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Marine Mammals and Seabird Surveys-USFWS/NMML

• Spring 2002 Marc Webber (USFWS)
• bird and marine mammal surveys from
• bridge (spring cruise only)
• coordinate/assist with Hajo Eickens
• ice observations
• opportunistically test images on helo
• missions when time, ice, walrus observed
• note spring helo ops limited marine mammal hunt
  issues
• Summer 2002 mooring cruise-possible NMML seals
  surveys

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• Data Management
• JOSS (Joint Office for Science Support)
  responsible for both shipboard field catalog and
  land-based data management (Dirks Moore)
• Remote Sensing
• Need to provide regional and basin scale spatial
  and temporal coverage
• (needs Cota, Gradinger Eicken, Maslowski,
  Pickart, Weingartner et al.)

SBI Process Studies (relevant Healy cruise)
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Other Core SBI Studies

• Time Series Moorings
• conductivity/salinity, temperature, ADCP
  (Weingartner, Aagaard Woodgate, Pickart)
• biochemical sensors nutrient, chlorophyll,
  transmissivity (pending)
• Modelling
• biophysical coupled modelling (Maslowski and
  Walsh)
• sea-ice modelling (Gradinger and Eicken)
• Winter sampling
• helicopter study (Christensen Melling)
• April 2003 US Navy ice camp

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Why Would A Teacher Participate?

• Research takes the teacher and the classroom
  beyond the textbook science. Inquiry-based
  experiences that show science as a human
  endeavor, and the relevance of science to
  societal issues. Science will come alive in
  the classroom.

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SBI port Nome, Alaska
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SBI PIs arrive Nome May 4 (spring)/July 14
(summer) Healy arrives Nome/PIs board May 5
(spring)/July 15 (summer) Healy departs Nome May
6/7 (spring)/July 16/17 (summer) Healy returns
Nome June 15 (spring)/Aug. 26 (summer) PIs
depart ship June 15 (spring)/Aug. 26 (summer)

• cargo to Healy April 1-20
• lab set-up April 15-20