Return-Path: palmer@atsvax.rsmas.miami.edu Return-Path: Received: from atsvax.rsmas.miami.edu (atsvax-dn.rsmas.miami.edu) by crseo.ucsb.edu (4.1/SMI-4.4-Crseo Special) id AA22768; Fri, 3 Sep 93 19:34:20 PDT Date: Sat, 4 Sep 93 02:23:25 GMT From: palmer@atsvax.rsmas.miami.edu Message-Id: <930904022325.21403d2c@atsvax.rsmas.miami.edu> Subject: PSDN-1609 SCIENCE SITREP To: palmer_science@atsvax.rsmas.miami.edu, wood.asa@asa.org X-St-Vmsmail-To: MSG%"PALMER_SCIENCE",ASAHQ,MSG%"WOOD.ASA@ASA.ORG" Status: O SEND PLM215.SEP MSG%"PALMER_SCIENCE",ASAHQ,MSG%"WOOD.ASA@ASA.ORG" PSDN-1609 SCIENCE SITREP R 040109Z SEP 93 FROM: Thomas K. Frazer, Science Leader 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 SPOLE NSFREP !TO ASAMCM,GRANTEES,ASASEC 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@asa.iac.org.nz asachch@asa.iac.org.nz,wwweather@ucdavis.edu,p.penhale@nsf.gov robin@crseo.ucsb.edu,langdon@crseo.ucsb.edu,ray@crseo.ucsb.edu dunton@utmsi.zo.utexas.edu,bsidell@maine.maine.edu prospero@rcf.rsmas.miami.edu,savoie@rcf.rsmas.miami.edu frazer@lifesci.ucsb.edu,M.Kennicutt,W.Stockton,T.Delaca, R.Hanson,E.Hofmann,R.Bidigare,R.Booth,W.Trivelpiece, O.Holm.Hansen,GMCC.BOULDER (pass to Bernard Mendonca), G.Mitchell,M.Vernet,N.Swanberg,M.Huntley,f.AZAM,R.RADTKE,D.Karl, S.WEILER,W.Fraser,SEA.SPACE,B.Sidell,W.Detrich,whbob@arcrane.ucsd.edu Responding: Please insert in message, all CAPS, with the ! in column 1: !TO PAL SCIENCE, LABMANAGER, ADMIN,MANAGER S-010 Ozone Dimunition, Ultraviolet Radiation and Phytoplankton Biology in Antarctic Waters. Co-Principal Investigators: B. Prezelin (S-010) and R. Smith (S-034). Field Team (S-010): B. Prezelin, N. Boucher, T. Evens, R. Jovine, B. Kroon, M. Moline and O. Schofield Our objective for our 3 month stay in Antarctica (August 8th- November 8th) is to quantify the UV dependency of production, photodamage & photoprotective responses in diverse Antarctic phytoplankton communities. Specifically, we aim to repeat previous in situ mooring studies in the MIZ and determine UV inhibition effects on key target sites known to occur in phytoplankton. Target sites for the proposed study include: i) DNA photodamage, ii) Photosynthetic electron flow and iii) Photoprotective carotenoids & mycosporine-like amino acids. We also planto return with 'time capsules' of microbial DNA that will be available for us & other researchers to examine for possible genetic effects of UV radiation on Antarctic marine microbial communities. Ice coverage has been highly variable since field exercises began August 17th, thus enabling us to conduct studies in frazil ice, water column and benthic communities of phytoplankton. Working nearshore waters around Palmer, we collected thus far collected 25 HPLC pigment, nutrient and CHN samples, 15 MAA samples, and 10 large volume samples of microbial DNA. In addition we have measured photosynthesis-irradiance curves (using Qpar- photosynthetrons) for freshly collected samples before and after outdoor incubation in the presence and absence of UV-B and UV-A radiation. Accompanying measurements of detrital-corrected absorption spectra (with the aid of an integrating sphere), fluorescence excitation spectra, and fluorescence decay kinetics (with the aid of a Pulse-Amplitude-Fluorimeter [PAM]) have been successful and a now a part of routine measurements to define the optical biology and photosensitivity of natural phytoplankton communities to UV radiation. We also completed the field measurement of a biological weighting function for UV-inhibition of primary production in Antarctic phytoplankton. S-014 Energetics of the Adults and Larvae of the Antarctic Krill, Euphausia superba. Principal Investigators: L.B. Quetin and R.M Ross. University of California at Santa Barbara. Field Team: T. Frazer, C. Wyatt and J. Mahoney Larval krill continue to be reared under varying food and temperature regimes. Subsamples of larvae from each experimental treatment are removed periodically and prepared for analysis of stable isotopic, elemental and chemical composition. Respiration rates of animals in each of the experimental treatments are measured prior to preparation procedures and information on growth rate and molting frequency is also recorded. Data are being organized and formatted for comparison with field collected data from June (WINCRUISE V) and other previous field seasons. Post- cruise (WINCRUISE V) processing of krill samples continues, e.g. determination of lipid and protein content. Field team member C. Wyatt (S-014/S-028) prepared and staged supplies in anticipation of the August/September LTER cruise and on September 29, T. Frazer departed Palmer Station as a participant on the LTER cruise. Ongoing laboratory experiments will be carried out by field team members remaining on station. S-032 Long-Term Ecological Research on the Marine Ecosystem: An Ice-Dominated System. Principal Investigator: R.C. Smith. and S-034 Ozone dimunition, Ultraviolet Radiation and Phytoplankton Biology in Antarctic Waters. Co-Principal Investigators R.C. Smith (S-034) and B. Prezelin (S-010). University of California at Santa Barbara. Field Team: R. Smith, D. Menzies, C. Johnson, P. Handley, E. Bruce and E. Fields Arrived on station 12 August. Set up labs and checked out equipment: BOPS2 - This instrument was used on the March/April cruise, and since there was no time to return it to Santa Barbara, it had been stored in PA warehouse. The BOPS2 was checked out new software tested, and a recalibration will be done between the LTER and Ice93 cruises. Computer Networking - for various field computers and instruments was set up and tested. PUV500 & PUV510 - These instruments were tested, and then set up at T-5 for intercomparison with the BSI UV monitoring system. ROZE - The zodiac operation for CTD, fluorescence, transmittance and the OFFI were set up and checked out in the boat house. LUVSS - This instrument was set up and tested. Our intent is to use the deck-LUVSS set up at T-5 for an intercomparison with the BSI UV monitoring system. Turner Fluorometers - Calibration and intercalibration of several turner fluorometers and the HPLC system used by Prezelin's group was carried out. Ice conditions prevented starting a regular LTER sampling effort within the Palmer grid although samples for chl were obtained in collaboration with Prezelin's group. In addition, and under ice dive was carried out in Hero Inlet and the PUV instrument were deployed to acertain the sensitivity of this instrument for measuring the penetration of UV through inc. S-106 Stanford VLF. U. Inan, Stanford University. Daily data continues to be collected and prepared for retrograde. There was a power outage on August 12, 1993. Digital data collection was interrupted and GEOS satellite lock was lost for several days. System was brought back on line and GEOS was later re-acquired. System being operated by ASA science technicians Andrew Archer and John Booth. 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 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 system. R. Whritner, Scripps Institute of Oceanography. PI on station. Installation of SPARC-2 successful; system now schedules, collects, and archives data from multiple satellites automatically. Telemetry data is being processed and examined daily, and ice images are being produced and sent to ATSVAX. 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. There was a power outage on August 12, 1993, but the system was brought back on line immediately. An absolute calibration intercomparison was performed on August 4, 1993, and an absolute calibration with the site standard was performed on August 20, 1993. High voltages were dropped on data and response scans due to brightening conditions. S-091 Seismic Observatory, United States Geological Survey. No personnel on station, system is being monitored by station science technician. Data is successfully collected and prepared for retrograde. There was a power outage on August 12, 1993; DP computer reset and changed tapes automatically; DA computer was unaffected. T. Frazer/PEOPLEAN 03230820.764 PLM215.SEP