A laser tomograph technique for ice core stratigraphy analysis
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概要
- 論文の詳細を見る
We have developed a laser tomograph system to analyze the detailed stratigraphic structure of ice core samples. We use a He-Ne laser as the light source and a CCD camera as a detector of a scattered image of air bubbles in ice. An image of air bubble distribution in the ice sample is obtained by image analysis of the scattered images. Two different algorithms are employed in the image analysis in order to improve the laser tomograph images. A profile of pore ratios obtained by using optimum conditions and algorithms for the analysis shows a good correlation of 0.80 with the actual pore ratio profile.
- 国立極地研究所の論文
著者
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Fujii Yoshiyuki
National Institute of Polar Research, Research Organization of Information and Systems
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Fujii Yoshiyuki
National Institute Of Polar Research
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Takata Morimasa
The Graduate University for Advanced Studies
関連論文
- Analyses of Ice Core Data from Various Sites in Svalbard Glaciers from 1987 to 1999
- Laboratory experiments and thermal calculations for the development of a next-generation glacier-ice exploration system: Development of an electro-thermal drilling device
- Periodicities of palaeo-climatic records extracted from the Dome Fuji deep core
- Improvements to the JARE deep ice core drill
- Deep ice core drilling to 2503m depth at Dome Fuji, Antarctica
- BASIC ANALYSES OF DOME FUJI DEEP ICE CORE PART 1 : STABLE OXYGEN AND HYDROGEN ISOTOPE RATIOS, MAJOR CHEMICAL COMPOSITIONS AND DUST CONCENTRATION
- 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)
- Ice core processing at Dome Fuji Station, Antarctica
- Regional characteristics of chemical constituents in surface snow, Arctic cryosphere
- 210-year ice core records of dust storms, volcanic eruptions and acidification at Site-J, Greenland (scientific note)
- Seasonality of isotopic and chemical species and biomass burning signals remaining in wet snow in the accumulation area of Sofiyskiy Glacier, Russian Altai Mountains
- Meteorological observations on Sofiyskiy Glacier, Russian Altai Mountains
- Chemical characteristics in a 22-m ice core on the Belukha Glacier, Russia
- CHEMICAL COMPOSITIONS OF SEA SALT PARTICLES AND PARTICULATE SULFUR COMPONENTS AT SYOWA STATION, ANTARCTICA
- UNIAXIAL COMPRESSION TESTS OF SHALLOW ICE CORES FROM POLAR ICE SHEETS
- Ice core drilling on the southern slope of the Nepal Himalayas
- 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
- VERTICAL PROFILES OF TOTAL ORGANIC CARBON AND POLAR ORGANIC COMPOUNDS IN THE ICE CORE FROM SITE-J, GREENLAND
- A FEASIBILITY STUDY ON HELIUM ISOTOPES IN ICE CORE
- EXTRACTION OF AIR BUBBLES IN ANTARCTIC ICE CORE SAMPLES AND DETERMINATION OF METHANE CONCENTRATION
- Glaciological characteristics of cores drilled on Jostedalsbreen, Southern Norway
- General tendencies of stable isotopes and major chemical constituents of the Dome Fuji deep ice core (scientific paper)
- Position, Elevation, Ice Thickness and Bedrock Elevation of Stations along the Routes in East Queen Maud Land and Enderby Land, East Antarctica
- 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)
- Preliminary results of crevasse detection experiment in the Antarctic by short pulse radar (abstract)
- Textures and fabrics of 700-m deep ice core obtained at Mizuho Station, East Antarctica
- Ice core analyses and borehole temperature measurements at the drilling site on Asgardfonna, Svalbard, in 1993 (scientific paper)
- Thermal ice core drilling to 700 m depth at Mizuho Station, East Antarctica
- Development of a JARE deep ice core drill system
- Glaciological data collected by the 37th Japanese Antarctic Research Expedition during 1996-1997 (Glaciology 27)
- Spring peaks of major and trace elements in snow at Asuka Station, East Antarctica
- 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
- AIR BUBBLE FORMATION PROCESS OBSERVED IN THE G6 ANTARCTIC ICE CORE
- ICE LAYER OBSERVATIONS IN THE G6 ANTARCTIC ICE CORE
- AN OVERVIEW AND PRELIMINARY RESULTS FROM THE ARCTIC AIRBORNE MEASUREMENT PROGRAM 1998 CAMPAIGN
- PRELIMINARY STUDY OF THE G6,ANTARCTIC ICE CORE
- Drilling fluid for Dome F Project in Antarctica
- Intermediate-depth core drilling at Mizuho Station, Antarctica by JARE-25 (abstract)
- ICE-BASED ALTITUDE DISTRIBUTION OF NATURAL RADIATION EFFECTIVE ENERGY AND ANNUAL EXPOSURE RATE IN THE ANTARCTIC ZONE
- DISTRIBUTIONS AND HISTORICAL RECORDS OF ALIPHATIC CARBOXYLIC ACIDS IN THE H15 ICE CORE FROM ANTARCTICA
- A laser tomograph technique for ice core stratigraphy analysis
- Application of He-microwave induced plasma atomic emission spectroscopy to an analysis of individual particulate matter
- SEM OBSERVATIONS OF VOLCANIC ASH AT 500M DEPTH IN THE MIZUHO ICE CORE
- VERTICAL PROFILE OF ^Pb IN AN ICE CORE FROM THE H∅GHETTA ICE DOME IN SPITSBERGEN
- MAJOR ELEMENT ANALYSIS OF FINE TEPHRAS FOUND IN AN ICE CORE FROM DOME FUJI STATION, ANTARCTICA
- VERTICAL DISTRIBUTIONS OF LOW MOLECULAR WEIGHT DICARBOXYLIC ACIDS IN THE H15 ICE CORE FROM ANTARCTICA
- Glaciological Research at Mizuho Station, Antarctica in 1977
- Glaciological research in Hidden Valley, Mukut Himal in 1994
- VOLCANIC RECORDS AND DATING OF THE UPPER HALF OF THE H15 ICE CORE FROM MIZUHO PLATEAU, EAST ANTARCTICA
- Cosmic spherules in bare ice near the Allan Hills, Victoria Land, Antarctica (extended abstract)
- GLACIOLOGICAL RESEARCH PROGRAM IN EAST QUEEN MAUD LAND, EAST ANTARCTICA PART 4,1984
- METEOROLOGICAL DATA AT MIZUHO STATION, ANTARCTICA IN 1984
- SEASONAL CHANGES OF LOW MOLECULAR WEIGHT DICARBOXYLIC ACIDS IN SNOW SAMPLES FROM DOME FUJI STATION, ANTARCTICA
- AIR EXTRACTION SYSTEMS FOR ICE CORE AND CO_2 AND CH_4 CONCENTRATIONS IN THE PAST ATMOSPHERE
- Ice core processing at Dome F, Antarctica
- Preface
- Glaciological Data Collected by the 30th, 31st and 32nd Japanese Antarctic Research Expeditions in 1989-1991
- 5. Surface Meteorological Data during Oversnow Traverses(Glaciological Data Collected by the 37th Japanese Antarctic Research Expedition during 1996-1997)
- 4. Snow Temperature Data at Dome Fuji Station(Glaciological Data Collected by the 37th Japanese Antarctic Research Expedition during 1996-1997)
- 3. Surface Snow Density around Dome Fuji Station(Glaciological Data Collected by the 37th Japanese Antarctic Research Expedition during 1996-1997)
- 2. Net Accumulation of Snow at Dome Fuji Station(Glaciological Data Collected by the 37th Japanese Antarctic Research Expedition during 1996-1997)
- 1. Outline of Field Observations during 1996-1997(Glaciological Data Collected by the 37th Japanese Antarctic Research Expedition during 1996-1997)
- Geomorphological and glaciological aspects around the highest dome in Queen Maud Land, East Antarctica
- Neutron activation analysis of spherules from bare ice near the Allan Hills and an ice core from Mizuho Station (abstract)
- Instrumental neutron activation analyses of the spherules from the Mizuho ice core (abstract)
- Semiannual Variation of Microparticle Concentration in Snow Drift at Mizuho Station, Antarctica in 1977
- Seasonal variation of pH values in snow at Halley Base and Mizuho Station, Antarctica (abstract)
- Seasonal variation of oxygen isotopic composition of drifting snow at Mizuho Station, East Antarctica (abstract)
- Past 30-year pH record in a firm core from the Brust Ice Shelf, Antarctica, and its relationship to volcanic events
- Formation of Surface Snow Layer at Mizuho Station, Antarctica
- Comparison of the Seasonal Meteorological Variations between Mizuho and Syowa Stations, Antarctica in 1977
- Determination of Methane Concentration in Air Extracted from Antarctic Ice Core Samples.
- Observation of Snow Particles at Hidden Valley, Mukut Himal:Glaciological Expedition of Nepal, Contribution No. 50
- Preliminary Investigations of Sediment Core Samples from the Tsola-Tso Lake, Khumbu Himal:Glaciological Expedition of Nepal, Contribution No. 77