Masatoshi Morita
Biographic Data
| ID | 4146370 |
|---|---|
| NAME | Masatoshi Morita |
| GIVEN NAMES | Masatoshi |
| FAMILY NAME | Morita |
| SIGNATURE | MORITA M |
| AFFILIATIONS | National Institute for Environmental Studies |
| VERIFIED | No |
| TOTAL WORKS | 11 |
| TOTAL CITATIONS | 130 |
| AUTHOR COUNT | 11 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1986 |
| LATEST PUBLICATION YEAR | 2024 |
| H-INDEX | 6 |
Annual Review Quantitative Geography and GISc
Urban and rural geographies of aging: A local spatial correlation analysis of aging population measures
The spatial distribution of aging populations is commonly measured with either the aging population ratio or the aging population density. Used in isolation, however, these measures may fail to detect aging communities in certain types of urban or rural setting. This study uses both indices simultaneously to identify types and locations of aging communities more accurately. We investigate the spatial distribution of these communities using a stan…
Chronology of the Yayoi skeletal remains from the Kanto district, Japan: A Preliminary Re-Evaluation by Radiocarbon Dating of Postcranial Material
Radiocarbon ages were determined for 25 samples of human skeletal remains previously assigned or attributable to the Yayoi period (tentatively considered ca. 500 BC to 300 AD) of the Kanto district, Japan. Suzuki (1969) and others, predominantly on cranial morphology, recognized that the Kanto Yayoi series contains three morphological groups: the native Jomon, transitional, and Kofun types. Morphological variation of the Kanto Yayoi people was co…
Temporal Variation of Radiocarbon Concentration in Airborne Particulate Matter in Tokyo
The temporal radiocarbon variation (in terms of percent Modern Carbon: pMC) of size-fractionated airborne particulate matter (APM) collected in Tokyo between April 2002 and February 2003 was analyzed in order to get an insight into the sources of carbonaceous particles. Results indicated significant biogenic origins (approximately 40 pMC on average). In general, the seasonal and particle size variations in pMC were relatively small, with 2 except…
Isotopic evidence of inland-water fishing by a Jomon population excavated from the Boji site, Nagano, Japan
Radiocarbon Marine Reservoir Effect in Human Remains from the Kitakogane Site, Hokkaido, Japan
Radiocarbon and Stable Isotope Analyses on the Earliest Jomon Skeletons from the Tochibara Rockshelter, Nagano, Japan
This study presents the results of carbon and nitrogen isotopic analyses of six human skeletons excavated from the Tochibara rockshelter (Nagano, Japan). The human skeletons were reported to be accompanied by “Oshigata-mon” type pottery dating to the Earliest Jomon period (8900 BP ≃ 6600 BP). A radiocarbon determination from charcoal associated with the human remains was reported to be 8650 ± 180 BP (GaK-1056). However, the depositional context o…
Compound-Specific Radiocarbon Ages of Fatty Acids in Marine Sediments from the Western North Pacific
Compound-specific radiocarbon analysis of five fatty-acid biomarkers was conducted for marine sediments collected from the western North Pacific. The fatty acids (C 12 to C 34 ) showed a typical bimodal distribution pattern with two maxima at C 16 and C 26 . Their carbon isotopic compositions ranged from −25.1‰ (C 16 ) to −31.8‰ (C 28 ), suggesting that they derived from terrestrial higher plants and marine organisms. A large variations of 14 C a…
Marine Radiocarbon Reservoir Effect in the Western North Pacific Observed in Archaeological Fauna
Faunal remains originating from terrestrial and marine mammals, and belonging to the same archaeological deposits were compared to evaluate the marine radiocarbon reservoir ages around the Hokkaido island, Japan. From five shell middens of different ages from the Jomon period (4900 BP) to the Ainu cultural period (800 BP), 107 animal bone samples were selected for radiocarbon measurements. The apparent age differences between Japanese deer and no…
Sodium-rich tree ash as a native salt source in lowland Papua
Variation in elemental composition of Japanese ancient (Jomon and Yayoi eras) human bones
Excavated ribs obtained from 30 Jomon and 7 Yayoi sites, and 5 skeletal components (rib, hand phalanx, vertebra, skull and fibula) of 3 different skeletons were analyzed for concentration of 19 elements by ICP atomic emission spectrometry and atomic absorption spectrometry. Elements without showing locational variation in the concentration were B, Ca, Cu, Ni and Pb, and large variations were for Al, Co, Fe, Sr, Ti and V. Between two eras, signifi…
Isotopic evidence of inland-water fishing by a Jomon population excavated from the Boji site, Nagano, Japan
Radiocarbon Marine Reservoir Effect in Human Remains from the Kitakogane Site, Hokkaido, Japan
Urban and rural geographies of aging: A local spatial correlation analysis of aging population measures
The spatial distribution of aging populations is commonly measured with either the aging population ratio or the aging population density. Used in isolation, however, these measures may fail to detect aging communities in certain types of urban or rural setting. This study uses both indices simultaneously to identify types and locations of aging communities more accurately. We investigate the spatial distribution of these communities using a stan…
Chronology of the Yayoi skeletal remains from the Kanto district, Japan: A Preliminary Re-Evaluation by Radiocarbon Dating of Postcranial Material
Radiocarbon ages were determined for 25 samples of human skeletal remains previously assigned or attributable to the Yayoi period (tentatively considered ca. 500 BC to 300 AD) of the Kanto district, Japan. Suzuki (1969) and others, predominantly on cranial morphology, recognized that the Kanto Yayoi series contains three morphological groups: the native Jomon, transitional, and Kofun types. Morphological variation of the Kanto Yayoi people was co…
Marine Radiocarbon Reservoir Effect in the Western North Pacific Observed in Archaeological Fauna
Faunal remains originating from terrestrial and marine mammals, and belonging to the same archaeological deposits were compared to evaluate the marine radiocarbon reservoir ages around the Hokkaido island, Japan. From five shell middens of different ages from the Jomon period (4900 BP) to the Ainu cultural period (800 BP), 107 animal bone samples were selected for radiocarbon measurements. The apparent age differences between Japanese deer and no…
Radiocarbon and Stable Isotope Analyses on the Earliest Jomon Skeletons from the Tochibara Rockshelter, Nagano, Japan
This study presents the results of carbon and nitrogen isotopic analyses of six human skeletons excavated from the Tochibara rockshelter (Nagano, Japan). The human skeletons were reported to be accompanied by “Oshigata-mon” type pottery dating to the Earliest Jomon period (8900 BP ≃ 6600 BP). A radiocarbon determination from charcoal associated with the human remains was reported to be 8650 ± 180 BP (GaK-1056). However, the depositional context o…
Compound-Specific Radiocarbon Ages of Fatty Acids in Marine Sediments from the Western North Pacific
Compound-specific radiocarbon analysis of five fatty-acid biomarkers was conducted for marine sediments collected from the western North Pacific. The fatty acids (C 12 to C 34 ) showed a typical bimodal distribution pattern with two maxima at C 16 and C 26 . Their carbon isotopic compositions ranged from −25.1‰ (C 16 ) to −31.8‰ (C 28 ), suggesting that they derived from terrestrial higher plants and marine organisms. A large variations of 14 C a…
Sodium-rich tree ash as a native salt source in lowland Papua
Variation in elemental composition of Japanese ancient (Jomon and Yayoi eras) human bones
Excavated ribs obtained from 30 Jomon and 7 Yayoi sites, and 5 skeletal components (rib, hand phalanx, vertebra, skull and fibula) of 3 different skeletons were analyzed for concentration of 19 elements by ICP atomic emission spectrometry and atomic absorption spectrometry. Elements without showing locational variation in the concentration were B, Ca, Cu, Ni and Pb, and large variations were for Al, Co, Fe, Sr, Ti and V. Between two eras, signifi…
Sodium-rich tree ash as a native salt source in lowland Papua
Compound-Specific Radiocarbon Ages of Fatty Acids in Marine Sediments from the Western North Pacific
Compound-specific radiocarbon analysis of five fatty-acid biomarkers was conducted for marine sediments collected from the western North Pacific. The fatty acids (C 12 to C 34 ) showed a typical bimodal distribution pattern with two maxima at C 16 and C 26 . Their carbon isotopic compositions ranged from −25.1‰ (C 16 ) to −31.8‰ (C 28 ), suggesting that they derived from terrestrial higher plants and marine organisms. A large variations of 14 C a…
Marine Radiocarbon Reservoir Effect in the Western North Pacific Observed in Archaeological Fauna
Faunal remains originating from terrestrial and marine mammals, and belonging to the same archaeological deposits were compared to evaluate the marine radiocarbon reservoir ages around the Hokkaido island, Japan. From five shell middens of different ages from the Jomon period (4900 BP) to the Ainu cultural period (800 BP), 107 animal bone samples were selected for radiocarbon measurements. The apparent age differences between Japanese deer and no…
Radiocarbon Marine Reservoir Effect in Human Remains from the Kitakogane Site, Hokkaido, Japan
Radiocarbon and Stable Isotope Analyses on the Earliest Jomon Skeletons from the Tochibara Rockshelter, Nagano, Japan
This study presents the results of carbon and nitrogen isotopic analyses of six human skeletons excavated from the Tochibara rockshelter (Nagano, Japan). The human skeletons were reported to be accompanied by “Oshigata-mon” type pottery dating to the Earliest Jomon period (8900 BP ≃ 6600 BP). A radiocarbon determination from charcoal associated with the human remains was reported to be 8650 ± 180 BP (GaK-1056). However, the depositional context o…
Isotopic evidence of inland-water fishing by a Jomon population excavated from the Boji site, Nagano, Japan
Temporal Variation of Radiocarbon Concentration in Airborne Particulate Matter in Tokyo
The temporal radiocarbon variation (in terms of percent Modern Carbon: pMC) of size-fractionated airborne particulate matter (APM) collected in Tokyo between April 2002 and February 2003 was analyzed in order to get an insight into the sources of carbonaceous particles. Results indicated significant biogenic origins (approximately 40 pMC on average). In general, the seasonal and particle size variations in pMC were relatively small, with 2 except…
Chronology of the Yayoi skeletal remains from the Kanto district, Japan: A Preliminary Re-Evaluation by Radiocarbon Dating of Postcranial Material
Radiocarbon ages were determined for 25 samples of human skeletal remains previously assigned or attributable to the Yayoi period (tentatively considered ca. 500 BC to 300 AD) of the Kanto district, Japan. Suzuki (1969) and others, predominantly on cranial morphology, recognized that the Kanto Yayoi series contains three morphological groups: the native Jomon, transitional, and Kofun types. Morphological variation of the Kanto Yayoi people was co…
Urban and rural geographies of aging: A local spatial correlation analysis of aging population measures
The spatial distribution of aging populations is commonly measured with either the aging population ratio or the aging population density. Used in isolation, however, these measures may fail to detect aging communities in certain types of urban or rural setting. This study uses both indices simultaneously to identify types and locations of aging communities more accurately. We investigate the spatial distribution of these communities using a stan…
Annual Review Quantitative Geography and GISc
Geography (8 works) · Geology (7 works) · Archaeology (6 works) · Archaeology and ancient environmental studies (6 works) · Biology (6 works) · Pacific and Southeast Asian Studies (6 works) · Radiocarbon dating (6 works) · Ecology (5 works) · Chemistry (4 works) · Isotope Analysis in Ecology (4 works)