Ratios of Mg2+/Na+ in snowpack and an ice core at Austfonna ice cap, Svalbard, as an indicator of seasonal melting

スポンサーリンク

概要

• 論文の詳細を見る

• Snowpack and ice-core samples were collected from the dome of Austfonna ice cap, Svalbard, in the spring of both 1998 and 1999. The samples were analyzed for anions, cations, pH, liquid electrical conductivity and oxygen isotopes. Concentrations of chemical components in snowpack with a history of melting were much lower than those in unmelted snowpack. There was a clear difference between Mg2+/Na+ ratios previously in melted snowpack (0.03 ± 0.02) and in unmelted snowpack (0.11 ± 0.02). We propose that the Mg2+/Na+ ratio can be used as an indicator of whether or not firn or bubbly ice in the Austfonna ice core has experienced melt percolation. The Mg2+/Na+ ratio indicates that firn or bubbly ice prior to AD 1920 was much less affected by melt percolation than firn or bubbly ice formed after 1920.

• International Glaciological Societyの論文

著者

• Watanabe Okitsugu

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

• Kawada Kunio

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

• Kawamura Kenji

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

• Iizuka Yoshinori

  Institute Of Low Temperature Science Pan-okhotsk Research Center Hokkaido University

• IGARASHI Makoto

  RIKEN

• Watanabe O

  National Institute Of Polar Research Research Organization Of Information And Systems

• Kamiyama K

  National Institute Of Polar Research Research Organization Of Information And Systems

• Kawamura K

  Center For Atmospheric And Oceanic Studies Tohoku University

• Kawada K

  Toyama Univ. Toyama

• Watanabe Okitsusgu

  National Institute of Polar Research

• Kawada Kunio

  Department Earth Science Toyama University

• Kamiyama Kokichi

  National Institute Of Polar Research Research Organization Of Information And Systems

• Watanabe Okitsugu

  National Institute Of Polar Research Research Organization Of Information And Systems

• Iizuka Y

  Department Of General Education Yuge National College Of Maritime Technology

• Igarashi M

  National Institute Of Polar Research

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