AIR EXTRACTION SYSTEMS FOR ICE CORE AND CO_2 AND CH_4 CONCENTRATIONS IN THE PAST ATMOSPHERE

スポンサーリンク

概要

• 論文の詳細を見る

• Dry and melt extraction systems have been developed to determine respectively the CO_2 and CH_4 concentrations of ancient air trapped in the polar ice core. The day extraction system was confirmed to be capable of crushing a core sample of 1kg to fine powder within 2 min, and its air extraction efficiency was estimated to be 98%. The air for the CH_4 measurements was extracted by melting core samples in an evacuated chamber. The CO_2 and CH_4 concentrations were determined using gas chromatography. The overall precision of our analyses is better than ±1 ppmv for CO_2 and ±10 ppbv for CH_4. Two Antarctic ice cores were used in this study. The ice core drilled at Mizuho Station (70°42'S, 44°20'E) showed that pre-industrial levels of the CO_2 and CH_4 concentrations (3300-200 yrs BP) were 279-287 ppmv and 690-750 ppbv, respectively and both concentrations increased rapidly for the last 200 years. It was also found that the CO_2 concentrations between 800 and 200 yrs BP were higher by almost 7 ppmv than those in remaining pre-industrial time, due probably to CO_2 release from the oceans and/or the biosphere. The Yamato core drilled near the end of ice flow (near the Yamato Mountains) showed concentrations of 230-240 ppmv and 530-580 ppbv for CO_2 and CH_4,respectively, which are apparently lower than post-glacial background levels, implying that the core was formed in the glacial period.

• 国立極地研究所の論文

著者

• Watanabe Okitsugu

  National Institute of Polar Research, Research Organization of Information and Systems

• Fujii Yoshiyuki

  National Institute of Polar Research, Research Organization of Information and Systems

• 張 紀久夫

  阪大基:福井工大工

• Takata Morimasa

  National Institute Of Polar Research

• Watanabe Okitsugu

  National Institute Of Polar Research

• Nakazawa Takakiyo

  Center for Atmospheric and Oceanic Studies, Tohoku University

• Nakazawa Takakiyo

  Center For Atmospheric And Oceanic Studies Graduate School Of Science Tohoku University

• TANAKA Masayuki

  Center for Atmospheric and Oceanic Studies, Faculty of Science, Tohoku University

• AOKI Shuhji

  National Institute of Polar Research

• Aoki S

  Center For Atmospheric And Oceanic Studies Graduate School Of Science Tohoku University

• Aoki Shuhji

  Faculty Of Science Tohoku University

• Fujii Yoshiyuki

  National Institute Of Polar Research

• Tanaka Masayuki

  Center For Atmospheric And Oceanic Studies Faculty Of Science Tohoku University

• MACHIDA Toshinobu

  Center for Atmospheric and Oceanic Studies, Faculty of Science, Tohoku University

• Nakazawa Takakiyo

  Center For Atmospheric And Oceanic Studies Graduate School Of Sci. Tohoku Univ.

• Fujii Y

  National Inst. Polar Res. Tokyo

• Nakazawa Takakiyo

  Center For Atmospheric And Oceanic Studies Faculty Of Science

• ESUMI Kenji

  Center for Atmospheric and Oceanic Studies, Faculty of Science, Tohoku University

• Esumi Kenji

  Center For Atmospheric And Oceanic Studies Faculty Of Science Tohoku University:(present Address)jap

関連論文

• Analyses of Ice Core Data from Various Sites in Svalbard Glaciers from 1987 to 1999
• Periodicities of palaeo-climatic records extracted from the Dome Fuji deep core
• Physical properties of the Dome Fuji deep ice core
• Improvements to the JARE deep ice core drill
• Deep ice core drilling to 2503m depth at Dome Fuji, Antarctica
• Regional distribution of chemical tracers in snow cover along the route from S16 to Dome Fuji Station, east Dronning Maud Land, Antarctica
• BASIC ANALYSES OF DOME FUJI DEEP ICE CORE PART 1 : STABLE OXYGEN AND HYDROGEN ISOTOPE RATIOS, MAJOR CHEMICAL COMPOSITIONS AND DUST CONCENTRATION
• Meteorological observations along a traverse route from coast to Dome Fuji Station, Antarctica, recorded by Automatic Weather Stations in 1995
• A preliminary study of ice core chronology at Dome Fuji Station, Antarctica
• Linking Antarctic glaciochemical records to past climate conditions (scientific paper)
• A bipolar comparison of deep ice cores from Antarctica（Dome Fuji）and Greenland（GRIP） (scientific paper)
• Ratios of Mg2+/Na+ in snowpack and an ice core at Austfonna ice cap, Svalbard, as an indicator of seasonal melting
• Ice core processing at Dome Fuji Station, Antarctica
• Regional characteristics of chemical constituents in surface snow, Arctic cryosphere
• Field observations of the Japanese Arctic Glaciological Expeditions in Svalbard from 1993 to 1995 (report)
• Studies on climatic and environmental changes during the last few hundred years using ice cores from various sites in Nordaustlandet, Svalbard (scientific paper)
• 210-year ice core records of dust storms, volcanic eruptions and acidification at Site-J, Greenland (scientific note)
• Stable oxygen isotope ratio observed in the precipitation at Ny-Alesund, Svalbard (scientific note)
• NON-SEA-SALT SULFATE AND NITRATE VARIATIONS IN THE S25 CORE, NEAR THE COASTAL REGION, EAST ANTARCTICA
• Estimation of annual layer thickness from stratigraphical analysis of Dome Fuji deep ice core (scientific paper)
• THE RELATIONSHIP AMONG ACCUMULATION RATE, STABLE ISOTOPE RATIO AND SURFACE TEMPERATURE ON THE PLATEAU OF EAST DRONNING MAUD LAND, ANTARCTICA
• PRELIMINARY REPORT ON ANALYSES OF MELTED DOME FUJI ICE CORE OBTAINED IN 1993
• Experimental results on the formation of hard compacted snow in Rikubetsu in northern Japan: A first step toward the construction of a compacted-snow runway on the Antarctic ice sheet
• Automatic Weather Station（AWS）data collected by the 33rd to 42nd Japanese Antarctic Research Expeditions during 1993-2001
• CHARACTERISTICS OF AC-ECM SIGNALS OBTAINED BY USE OF THE VESTFONNA ICE CORE, SVALBARD
• The source of atmospheric aerosols in inland Antarctica (abstract)
• Distribution of chemical elements in the snow at the site S25 in Antarctica
• PRELIMINARY REPORT ON THE CONTAMINATION CONTROL FOR CHEMICAL ANALYSES OF ANTARCTIC ICE SAMPLES
• Foreword
• Foreword
• Foreword
• Foreword
• BASIC ANALYSES OF DOME FUJI DEEP ICE CORE PART 2 : PHYSICAL PROPERTIES
• Determination of Trace Elements in an Arctic Ice Core by ICP/MS with a Desolvated Micro-concentric Nebulizer
• Determination of Lead-210 in an Ice Core from an Arctic Glacier by an Alpha-Ray Measurement
• Vertical distributions of low molecular weight dicarboxylic acids in the Greenland ice core (scientific paper)
• DETERMINATION OF POLYCYCLIC AROMATIC HYDROCARBONS IN THE ICE CORE SAMPLES FROM GREENLAND
• Results of analyses of Mizuho 700 m ice core, East Antarctica.Part 1.d18O, microparticles, ECM (acidity), pH, major ions(Glaciology 20)
• Position, elevation, ice thickness and bedrock elevation of stations along the routes in East Queen Maud Land and Enderby Land, East Antarctica(Glaciology 19)
• Ice fabric evolution process understood from anisotropic distribution of a-axis orientation on the GRIP (Greenland) ice core
• Average time scale for Dome Fuji ice core, East Antarctica
• Formation processes of a pocket consisting of bubble-free ice in Hamna ice cliff, Soya Coast, East Antarctica
• Gaseous acids in the atmosphere at Syowa Station, Antarctica (abstract)
• MINOR CHEMICAL CONSTITUENTS IN SNOW COVER ON MIZUHO PLATEAU, ANTARCTICA
• CHEMISTRY OF ANTARCTIC ATMOSPHERIC AEROSOLS
• THE STATE OF MINOR CONSTITUENTS IN THE ANTARCTIC SNOW AND ICE
• SNOW ACCUMULATION RATE AT SN∅FJELLAFONNA, NORTHWESTERN SPITSBERGEN, SVALBARD
• General tendencies of stable isotopes and major chemical constituents of the Dome Fuji deep ice core (scientific paper)
• CHEMISTRY OF SNOW, AEROSOLS AND ATMOSPHERIC ACID GAS AT DOME FUJI STATION, ANTARCTICA
• DISTRIBUTION OF CHEMICAL COMPONENTS BETWEEN ATMOSPHERE AND SNOW PHASES IN EAST QUEEN MAUD LAND
• THE RELATION BETWEEN CHEMICAL COMPOSITIONS OF SNOW AND ATMOSPHERIC AEROSOLS IN ANTARCTICA
• Position, Elevation, Ice Thickness and Bedrock Elevation of Stations along the Routes in East Queen Maud Land and Enderby Land, East Antarctica
• RELATION BETWEEN THE SPECIAL RADAR ECHO FROM WITHIN THE ICE SHEET AND THE CONFIGURATION OF THE GROUND (III) : ESTIMATION OF TEMPERATURE PROFILE IN THE ICE SHEET
• A VERY SHORT PULSE C-BAND RADAR FOR CREVASSE DETECTION
• RELATION BETWEEN THE SPECIAL RADAR ECHO FROM WITHIN THE ICE SHEET AND THE CONFIGURATION OF THE GROUND (I)
• JARE-35 GLACIOLOGICAL ACTIVITY AT DOME FUJI STATION, ANTARCTICA
• Chemical characteristics of basal ice near Hamna Icefall, East Antarctica
• YEAR-ROUND SURFACE SYNOPTIC OBSERVATIONS AT DOME FUJI STATION, EAST ANTARCTICA CONDUCTED BY THE FIRST OVERWINTERING PARTY
• HISTORICAL RECORDS OF FATTY ACIDS IN AN ICE CORE FROM SITE-J, GREENLAND
• DISTRIBUTION OF SURFACE CONDITIONS OF ICE SHEET IN ENDERBY LAND AND EAST QUEEN MAUD LAND, EAST ANTARCTICA
• Reconstruction of the atmospheric CO2 concentration history from an Antarctic deep ice core, Dome Fuji using a wet extraction technique: analysis procedures,dating of air in ice and concentration variations (scientific paper)
• A 320 k-year record of microparticles in the Dome Fuji, Antarctica ice core measured by laser-light scattering (scientific paper)
• Dating of the Dome Fuji, Antarctica deep ice core (scientific paper)
• Activities of the Japanese Arctic Glaciological Expedetion in 1999 (JAGE 1999) (report)
• DISTRIBUTION OF MEAN δ^O VALUES OF SURFACE SNOW LAYERS AND THEIR DEPENDENCE ON AIR TEMPERATURE IN ENDERBY LAND-EAST QUEEN MAUD LAND, ANTARCTICA
• A probing radar designed for simulation of radar echo of a meteorite within the ice sheet of the Antarctic Continent (I) (abstract)
• Measurement method of temperature distribution by radar echo within the ice sheet of the Antarctic Continent (abstract)
• Vertical distribution of ^Pb in the Arctic glacier, Snφfjellafonna, in northwestern Spitsbergen
• Longitudinal variations of temperature, wind and ablation in Broeggerbreen, Svalbard (scientific paper)
• HYDROLOGICAL OBSERVATIONS IN BREGGER GLACIER BASIN, SPITSBERGEN : DISCHARGE, TEMPERATURE AND ELECTRIC CONDUCTIVITY
• USING A MOBILE RADIO ECHO SOUNDER TO MEASURE BEDROCK TOPOGRAPHY IN EAST QUEEN MAUD LAND, ANTARCTICA
• Preliminary results of crevasse detection experiment in the Antarctic by short pulse radar (abstract)
• Glaciological Data Collected by the 29th Japanese Antarctic Research Expedition in 1988-1989
• ISOTOPIC COMPOSITION DATA ALONG A 700-M LONG MIZUHO CORE
• Features of ice sheet flow in East Dronning Maud Land, East Antarctica
• Ice core analyses and borehole temperature measurements at the drilling site on Asgardfonna, Svalbard, in 1993 (scientific paper)
• Development of a JARE deep ice core drill system
• Variations of the carbon isotopic ratio in atmospheric CO_2 over the last 250 years recorded in an ice core from H15,Antarctica
• VARIATIONS OF THE CO_2,CH_4 AND N_2O CONCENTRATIONS AND δ^C OF CO_2 IN THE GLACIAL PERIOD DEDUCED FROM AN ANTARCTIC ICE CORE, SOUTH YAMATO
• VARIATIONS OF THE PAST ATMOSPHERIC CH_4 CONCENTRATION DEDUCED FROM SITE-J ICE CORE, GREENLAND
• Foreword
• TESTS OF WIND POWER GENERATOR AND SOLAR BATTERY IN THE INLAND AREAS OF ANTARCTICA
• METEOROLOGICAL OBSERVATIONS BY DATA-LOGGING AUTOMATIC WEATHER STATION AT DOME FUJI STATION
• OBSERVATIONS ON THE EVAPORATION-CONDENSATION PROCESS AND HEAT-BALANCE DURING THE AUSTRAL SUMMER AT THE SNOW SURFACE OF DOME FUJI STATION, EAST ANTARCTICA
• STRUCTURE AND DIELECTRIC PROPERTIES OF SURFACE SNOW ALONG THE TRAVERSE ROUTE FROM COAST TO DOME FUJI STATION, QUEEN MAUD LAND, ANTARCTICA
• 3. Surface Meteorological Data during Oversnow Traverses and at Dome Fuji Station(Glaciological Data Collected by the 35th Japanese Antarctic Research Expedition during 1994-1995)
• 2. Net Accumulation of Snow by the Stake Method(Glaciological Data Collected by the 35th Japanese Antarctic Research Expedition during 1994-1995)
• 1. Outline of Field Observations during 1994-1995(Glaciological Data Collected by the 35th Japanese Antarctic Research Expedition during 1994-1995)
• Glaciological data collected by the 35th Japanese Antarctic Research Expedition during 1994-1995(Glaciology 25)
• Behavior of water in the Brogger Glacier, Spitsbergen (abstract)
• Characteristics of temperature fluctuation in Svalbard, in the Arctic (abstract)
• PLASTIC DEFORMATION PROPERTIES OF GREENLAND ICE CORE SAMPLES
• AN ATTEMPT AT DEFORMATION TESTS OF DEEP ICE CORE SAMPLES CONTAINING CLOUDY BANDS
• Scientific research collaboration efforts for Greenland ice core studies (review)
• Japanese glaciological study efforts in North Greenland Ice Core Project (NGRIP) (report)
• Preface
• Preliminary discussion of physical properties of the Dome Fuji shallow ice core in 1993, Antarctica
• ICE-BASED ALTITUDE DISTRIBUTION OF NATURAL RADIATION EFFECTIVE ENERGY AND ANNUAL EXPOSURE RATE IN THE ANTARCTIC ZONE
• Japanese glaciological activities in the Arctic region (report)
• The reduction of chloride ion concentration in basal ice near Hamna Icefall, East Antarctica

もっと見る 閉じる

スポンサーリンク