Tomoko Ohta
Biographic Data
| ID | 3880197 |
|---|---|
| NAME | Tomoko Ohta |
| GIVEN NAMES | Tomoko |
| FAMILY NAME | Ohta |
| SIGNATURE | OHTA T |
| AFFILIATIONS | Nagoya University |
| ORCID | 0000-0002-9418-8352 |
| VERIFIED | Yes |
| TOTAL WORKS | 7 |
| TOTAL CITATIONS | 0 |
| AUTHOR COUNT | 7 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1972 |
| LATEST PUBLICATION YEAR | 2019 |
| H-INDEX | 0 |
Variation of 14 C in Japanese Tree Rings Related to the Fukushima Nuclear Accident
Radiocarbon ( 14 C) analysis was performed on Japanese cedar (Cryptomeria japonica) tree rings from Koriyama, Fukushima prefecture. Our primary aim was to detect any 14 C release from the Fukushima Dai-ichi nuclear power plant accident on 11 March 2011. We also completed and assessed the 14 C level in Japanese tree rings for the period of 1990–2014 because of the lack of environmental 14 C results in the Japanese island that time. For this reason…
Radionuclides in Ancient Relics Obtained from the Matsusaki Site and the Hirohata Shellmound on the Pacific Coast of Japan
We compared 2 archaeological relics of different preservation environments, white substances adhering to a vessel from the Matsusaki site and to earthenware from Hirohata, by measuring their environmental radioactivity, 14 C, 228 Ra/ 226 Ra, 234 U/ 238 U, and 87 Sr/ 86 Sr, and major element contents (Ca, Sr, Mg, Fe, and Mn). The results showed that the 2 materials were somewhat different and also reflected differences in their preservation enviro…
Early Bronze Age Strata at Tell Ghanem Al-Ali Along the Middle Euphrates in Syria
We collected charcoal fragments during an archaeological excavation at the Tell Ghanem al-Ali site, located on the lowest terrace of the middle Euphrates River, and measured their radiocarbon ages with accelerator mass spectrometry (AMS). Two trenches, Square-1 and Square-2, were dug on the slope of the tell; 8 building levels were detected in the Square-2 trench. In total, 31 charcoal samples were collected from the 2 trenches, and their calibra…
Isotopic Analysis and Cycling of Dissolved Inorganic Carbon at Lake Biwa, Central Japan
This paper reports on concentrations and carbon isotopic results of dissolved inorganic carbon (DIC) in water samples collected at four locations and from several depths in Lake Biwa, central Japan, covering every season of the year, starting in the spring of 1995. Depth profiles of DIC concentration and DIC δ 13 C showed a strong seasonal pattern, as a result of vertical mixing of the lake water in winter and early spring, or lack of mixing in t…
Studies of Land Bridges and the Migration of Men and Other Animals along Them. Accelerator Mass Spectrometric 14C Dating of Mammalian Fossils Collected from the Sea Bottom of Continental Shelves aroun…
It is of great interest to know how much the land expanded towards the ocean as the result of the sea-level decrease during the Würm glacial stage. The existence of land bridges, that plays an important role in transporting human, animals and plants between the Eurasian Continent and the Japanese Islands during the Last Glacial, is still under debate. Geographical and geological studies have been performed to determine the location of shorelines …
Evolution of the Multigene Family
Theoretical Aspects of Population Genetics
No prominent works on this page.
Theoretical Aspects of Population Genetics
Evolution of the Multigene Family
Studies of Land Bridges and the Migration of Men and Other Animals along Them. Accelerator Mass Spectrometric 14C Dating of Mammalian Fossils Collected from the Sea Bottom of Continental Shelves aroun…
It is of great interest to know how much the land expanded towards the ocean as the result of the sea-level decrease during the Würm glacial stage. The existence of land bridges, that plays an important role in transporting human, animals and plants between the Eurasian Continent and the Japanese Islands during the Last Glacial, is still under debate. Geographical and geological studies have been performed to determine the location of shorelines …
Isotopic Analysis and Cycling of Dissolved Inorganic Carbon at Lake Biwa, Central Japan
This paper reports on concentrations and carbon isotopic results of dissolved inorganic carbon (DIC) in water samples collected at four locations and from several depths in Lake Biwa, central Japan, covering every season of the year, starting in the spring of 1995. Depth profiles of DIC concentration and DIC δ 13 C showed a strong seasonal pattern, as a result of vertical mixing of the lake water in winter and early spring, or lack of mixing in t…
Radionuclides in Ancient Relics Obtained from the Matsusaki Site and the Hirohata Shellmound on the Pacific Coast of Japan
We compared 2 archaeological relics of different preservation environments, white substances adhering to a vessel from the Matsusaki site and to earthenware from Hirohata, by measuring their environmental radioactivity, 14 C, 228 Ra/ 226 Ra, 234 U/ 238 U, and 87 Sr/ 86 Sr, and major element contents (Ca, Sr, Mg, Fe, and Mn). The results showed that the 2 materials were somewhat different and also reflected differences in their preservation enviro…
Early Bronze Age Strata at Tell Ghanem Al-Ali Along the Middle Euphrates in Syria
We collected charcoal fragments during an archaeological excavation at the Tell Ghanem al-Ali site, located on the lowest terrace of the middle Euphrates River, and measured their radiocarbon ages with accelerator mass spectrometry (AMS). Two trenches, Square-1 and Square-2, were dug on the slope of the tell; 8 building levels were detected in the Square-2 trench. In total, 31 charcoal samples were collected from the 2 trenches, and their calibra…
Variation of 14 C in Japanese Tree Rings Related to the Fukushima Nuclear Accident
Radiocarbon ( 14 C) analysis was performed on Japanese cedar (Cryptomeria japonica) tree rings from Koriyama, Fukushima prefecture. Our primary aim was to detect any 14 C release from the Fukushima Dai-ichi nuclear power plant accident on 11 March 2011. We also completed and assessed the 14 C level in Japanese tree rings for the period of 1990–2014 because of the lack of environmental 14 C results in the Japanese island that time. For this reason…
Geology (5 works) · Geography (4 works) · Biology (3 works) · Chemistry (3 works) · Environmental Science (3 works) · Isotope Analysis in Ecology (3 works) · Oceanography (3 works) · Radiocarbon dating (3 works) · Accelerator mass spectrometry (2 works) · Archaeology (2 works)