Return-Path: charleen Return-Path: Received: by crseo.ucsb.edu (4.1/SMI-4.4-Crseo Special) id AA15407; Wed, 7 Jul 93 09:54:20 PDT Message-Id: <9307071654.AA15407@ crseo.ucsb.edu> To: ray Subject: sitrep on omnet Date: Wed, 07 Jul 1993 09:54:20 -0700 From: Charleen Johnson Posted: Fri, Jul 2, 1993 9:16 PM EDT Msg: GGJD-5781-8499 From: PALMER.STA To: PALMER.SCIENCE Subj: PSDN-1384 SCIENCE SITREP FOR JUNE 1993 SEND PLM081.JUL MSG%"PALMER_SCIENCE",ASAHQ,MSG%"WOOD.ASA@ASA.ORG" PSDN-1384 SCIENCE SITREP FOR JUNE 1993 R 030013Z JUL 93 FROM: Science Leader, THOMAS K. FRAZER P A L M E R S T A T I O N A N T A R C T I C A TELEMAIL::PALMER.STA PHONE/FAX: 011-874-150-3157 SPAN::PALMER@ATSVAX.SPAN TELEX: 5841503157 PNHG INTERNET::PALMER@ATSVAX.RSMAS.MIAMI.EDU !TO ASA SHEPHERD !TO SPOLE NSFREP CC E-MAIL::SPOLE,DUKE,NATPALMER,VLF@STAR.STANDFORD.EDU, ASAHQ@ASA.ORG,NSFMCM,KARENTZD@ALM.ADMIN.USFCA.EDU, CHAPPELL@UCRACC.SPAN,DALLUGE@ATMOS.OGI.EDU,DPP-MESSAGES@ NSF.GOV,NSFCHCH@IAC.ORG.NZ,ASACHCH@IAC.ORG.NZ,WWWEATHER@ UCDAVIS.EDU,P.PENHALE@NSF.GOV,ANTARCTIC.OPS,NSF.DPP.OCEANOPS, J.PROSPERO,T.DELACA,R.HANSON,E.HOFMANN,R.BOOTH,O.HOLM.HANSEN, G.MITCHELL,M.VERNET,M.HUNTLEY,R.WHRITNER,D.KARL,W.FRAZER, B.SIDELL,W.DETRICH,M.KENNICUTT,K.DUNTON,W.STOCKTON,L.QUENTIN, R.ROSS,R.BIDIGARE,W.TRIVELPIECE,GMCC.BOULDER (PASS TO BERNARD MENDONCA),R.SMITH.UCSB,N.SWANBERG,F.AZAM,R.RADTKE,S.WEILER, SEA.SPACE Responding: Please insert in message, all CAPS, with the ! in column 1: !TO PAL SCIENCE, LABMANAGER, ADMIN,MANAGER S-014 Energetics of the Adults and the Larvae of the Antarctic Krill Euphausia superba. Principal Investigators: Langdon B. Quetin and Robin M. Ross, University of California at Santa Barbara. Field Team: Thomas Frazer, Carol Wyatt, Jacqueline Mahoney, Treva Coe, Don Canestro, Giovanni Catalano, Laura Serold, Nejat Ezal and Stephen Pryor T. Frazer, C Wyatt, D. Canestro, G. Catalano, N. Ezal and S. Pryor departed Punta Arenas on 31 May and joined remaining field team members at Palmer Station on 05 June. Two days were spent loading and securing scientific gear aboard the Polar Duke in preparation for Win Cruise V. Orientation dives were also made during this time to allow divers to adjust weights and familiarize themselves with gear and procedures to be used on the cruise. A minimum of two dives was made by each diver and those without prior experience in the Antarctic were paired initially with T. Frazer and/or subsequently with D. Canestro (Diving Safety Officer, Univ. Calif. Santa Cruz). The Polar Duke departed Palmer Station 07 June with all team members except J. Mahoney, who remained at station to maintain phytoplankton cultures needed for post-cruise experiments and process samples collected earlier in the 1993 field season. During the cruise (08 June through 24 June), sampling was conducted both in ice covered and open water environments. Sampling within the ice environment (08 June through 18 June) was concentrated west of Adelaide Island in a region of recently formed sea ice and generally coincided with established LTER sampling sites (300.100, 300.080, 300.060 and 300.040). Open water sampling (19 June through 24 June) was directed along a northeast transect away from a recognizable ice-edge zone and also coincided with established LTER sampling locations (400.200, 500.200 and 600.200). The described sampling regime was chosen to minimize transit time between stations and maximize experimental contrast without access to informative and updated satellite imagery. An additional sampling objective was to provide continuity with existing and anticipated data sets in the region. Weather was generally favorable during the cruise and 20 dives were made under sea ice. Larvae of Euphausia superba closely associated with sea ice were mainly later stage furcilia. However, adults were commonly observed. Vertical net tows under ice cover and in open water yielded all life history stages from calyptopis 2 through adult. Animals were collected in both habitats for shipboard experiments and subsequent processing at Palmer Station and Santa Barbara. A sample of all available larval stages in both open water and ice covered habitats was measured and prepared aboard ship for subsequent analyses of elemental composition and condition factor. A subsample of most larval stages were also prepared for an analysis of chemical composition at Palmer Station. Life history stages C2 through adult were collected in both open water and ice covered habitats and prepared for a subsequent analysis of stable isotope composition. A total of ten instantaneous growth rate experiments were completed aboard ship. Replicated oxygen consumption experiments were completed with larvae captured by divers under the ice and those captured with nets in open water. Krill larvae were also collected in both habitats for an estimation of ingestion rate based on a whole body fluorescence technique. At each sampling location, the water column was sampled at discrete depths for both particulate organic carbon and chlorophyll concentration. The ice was also sampled for carbon and chlorophyll, but to a lesser extent. The CTD aboard the Polar Duke proved to be non-functional throughout the cruise and the physical environment was characterized at each sampling location with temperature and salinity measures obtained via XBT and water collections at discrete depths. The Polar Duke arrived at Palmer Station on 24 June and departed 26 June with all S-014 field team members except T. Frazer, C. Wyatt and J. Mahoney. During the offload period, scientific gear and live krill were transfered to station and ongoing shipboard experiments were completed. Post-cruise activities include initial sorting of larvae, as well as, their general care and maintenance, processing of frozen samples, data compilation and analyses and set-up for experiments to be initiated July 1. We thank ASA personnel and the captain and crew of the Polar Duke for their contributions to the project and success of Win Cruise V. S-106 Stanford VLF. U. Inan, Stanford University. Installation of Digital Data Acquisition system successful. Daily data continues to be collected and prepared for retrograde. System being operated by ASA science technician, Andrew Archer. S-275 UM/DOE Atmospheric Monitoring Program at Palmer Station. T. Snowdon, University of Miami; C. Sanderson/N. Chui, EML/DOE N.Y. No personnel on station. System is being run by ASA science technician. System continues to operate on a normal weekly schedule of calibration, background, and sample counts, with one sample filter being exposed for the duration of the week. T-312 Terascan Satellite Imaging Ssystem. R. Whritner, Scripps Institute. No personnel on station. System is being operated by station science technician. HRPT and DMSP satellite passes have been successfully and continuously archived. Capture of NOAA-12 satellite telemetry is now in manual mode only. DMSP imaging capabilities were not available. T-313 UV Monitoring Experiment. C. Booth, Biospherical Instruments. No personnel on station. System is being operated by station science technician. The system is successfully collecting UV data. An Absolute calibration was performed on 30 June 93. S-091 Seismic Observatory, United States Geological Survey. No personnel on station. System is being monitored by station science technician. Data has been collected and prepared for retrograde. FRAZER/NESS 02141250.764 PLM081.JUL