Recent Japanese research on relative sea level changes in the Holocene and related problems. Review of studies between 1980 and 1988.

Ôta, Yôko; Umitsu, Masatomo; Matsushima, Yoshiaki

doi:10.4116/jaqua.29.31

Cited by 63 publications

(39 citation statements)

References 17 publications

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“…Sea level reached its maximum height (higher than it is at present) in Japan ca. 6,500 -5 ,000 years before present, as estimated by carbon isotope dating (14C yrs BP) (Ota et al, 1990). This transgression is called the Jomon transgression.…”

Section: Introductionmentioning

confidence: 99%

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Vertical Changes of Holocene Ostracodes in Bore Hole Cores from off Kobe, Related to the Opening of Straits and Relative Sea-Level Change in Western Japan.

et al. 2001

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Section: Introductionmentioning

confidence: 99%

“…Drowned valleys and small enclosed bays developed inland. Many straits opened around the Japanese islands (Ota et al, 1990). Many authors have reported the developmental history of the Osaka Plain and its adjacent areas during the Holocene period (e. g., Kajiyama and Itihara,1972;Maeda, 1976Maeda, , 1978.…”

Section: Introductionmentioning

confidence: 99%

Vertical Changes of Holocene Ostracodes in Bore Hole Cores from off Kobe, Related to the Opening of Straits and Relative Sea-Level Change in Western Japan.

et al. 2001

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“…The second cooling and fall of the sea level occurred during the Final Jomon period (Izeki, 1974;Ota et al, 1982Ota et al, , 1990Umitsu, 1994), leading to a further reduction of the Jomon population throughout most of the Japanese archipelago (Koyama, 1978;Koyama and Sugito, 1984). However, in Aichi prefecture, the number and scale of the sites increased from the Late to Final Jomon period (Koyama, 1978).…”

Section: Discussionmentioning

confidence: 99%

Dental metric variability associated with human migration from skeletal remains of two Jomon sites (Yoshigo and Inariyama) in the Atsumi Peninsula area

Morita

Kusaka

Yano

et al. 2012

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This study investigated interpopulation genetic relationships in the Jomon Atsumi Peninsula area, comparing the pattern of human migration revealed by strontium isotope ratio with dental metric variation of Yoshigo and Inariyama skeletal remains. Morphological differences were evaluated between the local and immigrant groups to determine whether or not local populations had become completely homogenized by human migration. We have constructed 4 × 4 contingency tables consisting of four clusters derived from K-means clustering of dental measurements and four groups (immigrants and locals of the two sites), and evaluated their correlations by Fisher's exact test. The results revealed that human migration pattern was significantly correlated with dental metric variation, suggesting that there was regional heterogeneity among Jomon populations in the Atsumi Peninsula area. Although the distinction between immigrants and locals of Yoshigo and Inariyama populations based on strontium isotope analysis was not completely in accord with dental metric variability, most of the identified immigrants exhibited dental profiles that were beyond each local profile as determined using principal component analysis. Furthermore, the dental metric variances of the immigrants were significantly larger than those of the locals, suggesting multiple origins. The microdifferentiation among populations in the Atsumi Peninsula area may suggest nonrandom kin-structured migration and/or population aggregation from surrounding areas.

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“…Most the relative sea-level curves show that the maximum Holocene transgression occurred during the period of 6, 500 to 5, 000 yrs BP. (Matsumoto, 1981(Matsumoto, , 1985Matsushima, 1984;Fujimoto, 1990;Ota et al, 1990;Umitsu, 1991) and reached about +4m above present sea-level in the Kanto Plain and Sendai (Matsumoto, 1981(Matsumoto, , 1985Saito, 1991Saito, , 1995.…”

Section: Relative Sea-level Changementioning

confidence: 99%

Reconstruction of Sedimentary Environments for Late Pleistocene to Holocene Coastal Deposits of Lake Kamo, Sado Island, Central Japan.

1998

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Multiproxy analyses including grain size, total organic carbon (TOC), total sulfur (TS), total nitrogen (TN), calcium carbonate (CaCO3) contents, diatom as well as sedimentary properties of the boring core KM-11 (54 m in length) collected from a brackish lake, Lake Kamo, are used to reconstruct paleoenvironment and coastal evolution of northeast coast of Sado Island in central Japan. Anoxic and normal marine sediments can be detected by TOC-TS relationship, and the origin of organic matter is inferred from the TOC/TN ratio. Geochemical characteristics of the sediments respond striking to sea-level change. In the Late Pleistocene, fluvial sediments are characterized by high TOC, very low TS and terrigenous organic matter. The overlying coastal marsh sediments are characterized by high TOC and abruptly increasing trend of TS suggesting sea water spilled into the site, and are overlain by estuarine sediments which obviously indicates the beginning of the Holocene transgression. Embayment sediments are characterized by low TOC, marine organic matter and low productivity condition indicating the rapid relative sea-level rise. The maximum Holocene transgression could be inferred between 6,500 and 5,000 yrs BP. After that fluctuations of relative sea-level are characterized by high TOC, high TS, a mixed type of marine/terrigenous organic matter and high productivity condition to be inferred marine/brackish lagoonal sediments. Diatom floral changes of the core KM-11 also support the geochemical data to interpret the paleoenvironment and evolution of the coastal deposits.

show abstract

Recent Japanese research on relative sea level changes in the Holocene and related problems. Review of studies between 1980 and 1988.

Cited by 63 publications

References 17 publications

Vertical Changes of Holocene Ostracodes in Bore Hole Cores from off Kobe, Related to the Opening of Straits and Relative Sea-Level Change in Western Japan.

Vertical Changes of Holocene Ostracodes in Bore Hole Cores from off Kobe, Related to the Opening of Straits and Relative Sea-Level Change in Western Japan.

Dental metric variability associated with human migration from skeletal remains of two Jomon sites (Yoshigo and Inariyama) in the Atsumi Peninsula area

Reconstruction of Sedimentary Environments for Late Pleistocene to Holocene Coastal Deposits of Lake Kamo, Sado Island, Central Japan.

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