- 2022 - 2025 Chronological study of immigration and settlement of prehistoric Aleut by precise 14C dating with ocean reservoir correction
- 2018 - 2021 東ポリネシアにおける人類到達時期とその後の植生改変
- 2017 - 2021 Radiocarbon dating of ancient iron artifacts with high precision: Extension of measurements from metal iron to rusty iron samples
- 2017 - 2020 Studies of radiocarbon dating using the micro-fibers remained on the surface of phytolith
- 2017 - 2020 International collaborative research on tephrology, archeology and paleoecology on the Aleut ruins in the western part of the Fox Islands, Alaska
- 2016 - 2020 Interdisciplinary research for reconstruction of paleo diets and heating method in cooking pods combined with lipid and usage analysis
- 2014 - 2019 Investigation on the source of atmospheric particles are related cloud nucleation activity: Towards the establishment of a new aerosol climatology
- 2014 - 2019 中国新石器時代における家畜・家禽の起源と、東アジアへの拡散の動物考古学的研究
- 2015 - 2018 Study on radiocarbon dating of mortar samples
- 2015 - 2018 Archaeological Reseach on the cities along the Silk Road in Central Asia and those devlopment
- 2015 - 2018 Achievement of accurate C-14 dating for charcoal based on a chemical index
- 2014 - 2017 Development of gravitational slope deformation as precursor of deep-seated landslide
- 2014 - 2017 Impact on the vegetation by the volcanic eruption and their recovery process
- 2014 - 2017 Radiocarbon Intercomparison on Chemical Experiments, Water series (RICE-W)
- 2014 - 2017 Calibration of 14C ages to calendar years according to annual-year-based 14C data and its application to wiggle matching
- 2013 - 2017 Verification of terrestrial radiocarbon age calibration data
- 2013 - 2016 Reconstruction of paleo diet by organic geochemical anarisys
- 2012 - 2016 International Joint Research for Establishment of Tephra Network in the Philippines
- 2012 - 2015 A modification of preparation method of ancient iron artifacts for radiocarbon dating
- 2010 - 2015 Urban Genesis in China : Multidisciplinary Study of Liangzhu Site Groups
- 2010 - 2015 Zooarchaeological Approaches on arrival and dispersal of domesticated animals in East Asia.
- 2010 - 2014 Inter-comparison of 14C dates on tree rings among 14C laboratories and construction of calibration datasets for Japanese archeological remains
- 2011 - 2013 Prehistoric earthquake and heavy-rain disasters and their future prediction by the analyses of dammed-lake sediments
- 2011 - 2013 Japan-US joint research on eruptive history and Aleut archaeological sites using radiocarbon and tephra chronologies
- 2008 - 2012 The Rise and Fall of Basin-irrigated Agriculture at Remote outposts and the Origin of Pastoral Nomadism in the Near East.
- 2010 - 2011 Precise 14C dating of wooden cultural properties treated for preservation with PEG
- 2009 - 2011 Collaborative study between Japan and Philippine on volcanic and geothermal history of Irosin caldera, south Luzon, Philippine
- 2009 - 2011 A study on transition of interglacial-glacial on the basis of lacustrine sediment information in East Eurasia
- 2008 - 2010 Lake tectonics in Tibet : uplift of lake shorelines and estimates of lower crustal viscosity
- 2007 - 2010 Research on geoenvironmental dynamics of coastal and alluvial lowlands
- 2007 - 2009 A study on estimation of calendar age for wooden cultural properties with high precision by wiggle matching
- 2007 - 2009 Zooarchaeological Approaches on arrival and dispersal of domesticated animals in East Asia.
- 2006 - 2009 Reconstructing the study of Hemudu Culture : Multi-disciplinary research of Tianluoshan site, Yuyao, China.
- 2005 - 2009 Understanding the environmental changes of middle Euphrates area using geological, geochemical and <14>^C dating method
- 2005 - 2008 Foundamental research on quantitative forecast of the physical environment in the near future based on surface geological data
- 2007 - 2007 ELECTROMAGNETIC STUDY AND 14C DATING STUDY ON ARCHAEOLOGICAL RUINS AND OBJECTS OF MEDIEVAL PERIOD
- 2006 - 2007 The radiocarbon dating of ancient iron articles by accelerator mass spectrometer method The development and application
- 2005 - 2007 Calculated reservoir ages using paired AMS ^<14>C and MC-ICP-MS U-Th dating of foraminifera test, implications for paleoceanography
- 2005 - 2007 Research on investigation, analysis, and conservation of artifacts from Takashima underwater site
- 2005 - 2007 STUDY ON THE EVIDENCE OF DISASTER AT THE ARCHAEOLOGICAL RUINS-EARTHQUAKE, VOLCAIC ERUPTION AND WAR
- 2003 - 2007 中世都市遺跡の電磁気調査と^<14>C年代法による編年の研究
- 2003 - 2007 「中世考古学の総合的研究」調整班B02学融合方法論研究ー自然科学・古環境系
- 2005 - 2006 High-resolution Chronology of Humic Soil and Peat Layer Established by Tephra Layers and Radiocarbon Dates
- 2004 - 2006 A study of determining the tree-ring age with a precision of one year by 14C wiggle matching
- 2003 - 2006 Research on the micro landforms of the coastal and alluvial lowlands in relation to the Holocene geo-environment.
- 2003 - 2006 The zooarchaeological approach on he origina and diffusion of domesticated animals in the East Asia, focusing on cattle, horse and pig
- 2004 - 2005 微生物の活動が考古学資料のC-14年代に及ぼす影響
- 2002 - 2004 STUDY OF HEATING HISTORY IN ARCHAEOLOGICAL MATERIALS -COOKING EVIDENCE, AFFECTED VOLCANIC DISASTER, ETC.
- 2002 - 2004 Integrated study to refine high-precision dating for the geomorphic and geologic time scales of the Late Quaternary
- 2002 - 2003 The actual grasp of an operation form in iron manufacture remains of the ancient times -Using radiocarbon dating with an accelerator mass spectrometry -
- 2002 - 2003 Calibration of AMS C-14 ages prior to 20,000 years B.P. or more, using Fission Track ages of burnt obsidians
- 2001 - 2003 Cosomogenic isotope production and global carbon cycles during the past 10,000 years
- 2001 - 2003 A study on accurate age determination of volcanic eruptions by high-precision 140 dating and a wiggle matching analysison charred wood from volcanic deposits
- 2001 - 2003 Establishment of high-precision chronology for Jomon and Yayoi periods
- 2002 - 2002 加速器C-14年代測定の実験室間の比較検定
- 1999 - 2001 Osteoarchaeology Research of Human Skeletal and Animal Bone Remains from Archaeology Excavation.
- 1999 - 2001 Modeling of structures.of CO_2, water vapor and heat transfers between terrestrial ecosystem and atmosphere
- 1999 - 2001 Coastal Landform Evolution and Environmental Changein the Late Holocene
- 1999 - 2001 High-precision dating of significant geologic phenomena in Post-Glacial age
- 1999 - 2001 陸水系におけるガス交換の研究
- 1998 - 2001 AMS radiocarbon measurements of individual organic molecules : making preparative capillary GC system and its application to geochemical samples
- 1999 - 2000 Study on the adaptive radiation and extinction of Quaternary terrestrial vertebrates of the Nansei Islands.
- 1999 - 2000 A study about ancient iron production using radiocarbon dating -Toward elucidation of an actual grasp of a manufacturing process of an ancient iron products-
- 1998 - 2000 Variations and Cycles of Greenhouse Gases on the Earth's Surface
- 1998 - 1999 A study on accurate age measurement of buried wood by high-precision 14C dating and 14C wiggle matching
- 1997 - 1999 Radiocarbon Calibration Using Japanese Wood Samles
- 1997 - 1998 High-precision dating of significant geologic phenomena in Post-Glacial age
- 1997 - 1998 Basic research concerning age measurement of an ancient iron product-Verifications and establishments of ^<14>Cage measuring theories by ancient iron-manufacturing experiment
- 1997 - 1997 骨化石のアミノ酸を用いた高精度14C年代測定による日本人の起源の研究
- 1996 - 1997 Estimation of the origin of atmospheric methane by the use of atmospheric diffusion analysis and measurements of atmospheric radioactivity and isotope ratio.
- 1993 - 1995 Late Quaternary changes of warm current system in the northwestern Pacific Ocean from the equator to the Ryukyu Island Arc region.
- 1993 - 1995 Evaluation of sources of atmospheric methane using isotopic measurement and diffusion model analysis
- 1993 - 1994 A Study on Accurate Radiocarbon Dating of Ancient Cultural Properties with Accelerator Mass Spectrometry
- 1993 - 1994 Anthropological Study on Prehistoric Polynesian Dispersal
- 1992 - 1992 大気・海洋間における二酸化炭素交換速度の評価
- 1992 - 1992 浅海調査による中央構造線活断層系西部・別府地溝帯の地震特性評価
- 1991 - 1992 Studies to attain high accuracy in radiocarbon dating with AMS of sedimentary samples older than 30,000y.B.P.
- 1989 - 1992 拡散集団の食生態と時空分布(同位体による古栄養学、AMS法による年代測定)
- 1991 - 1991 拡散集団の食生態と時空分布(同位体による古栄養学、AMS法による年代測定)
- 1990 - 1990 拡散集団の食生態と時空分布(同位体による古栄養学、AMS法による年代測定)
- 1989 - 1989 拡散集団の食生態と時空分布(同位体による古栄養学、AMS法による年代測定)
- 1984 - 1986 Study of the variation of paleoenvironment based on the analysis of micro fossils and chemical fossils preserved in the sediment core of the Lake Biwa.