631 research outputs found
A re-analysis of the Lake Suigetsu terrestrial radiocarbon calibration dataset
No full textSuigetsu 2006 Project Members: J.J. Taylor for the University of Adelaide.R.A. Staff, C. Bronk Ramsey, T. Nakagawa, Suigetsu 2006 Project Member
Atlas of pollen, spores and further non-pollen palynomorphs recorded in the glacial-interglacial late Quaternary sediments of Lake Suigetsu, central Japan
No full textAbstract not availableDieter Demske,Pavel E. Tarasov,Takeshi Nakagawa, Suigetsu 2006 Project Member
A standard sample method for controlling microfossil data precision: a proposal for higher data quality and greater opportunities for collaboration
No full textSuigetsu 2006 Project Members: J. J. Taylor for the University of Adelaide.Abstract not availableTakeshi Nakagawa, Hiroyuki Kitagawa, Rebecca Payne, Pavel Tarasov, Dieter Demske, Suigetsu 2006 Project Member
Cryptomeria pollen abundance and a new chronologic framework of core SG06 from Lake Suigetsu (Japan) since 146 ka
No full textWe present new Cryptomeria pollen abundance back to the penultimate glacial period (146 ka). The sediments down to a maximum penetration depth of 73m were recovered in summer 2006 using a hydro-pressure thin-walled piston sampler and a floating platform by the Suigetsu 2006 Project Members. A new chronology for the Lake Suigetsu's sediments were developed beyond the well-constrained radiocarbon limit based on (1) tephrochronology, and (2) tephrostratigraphy, and (3) careful alignment of Cryptomeria pollen abundance between Lake Suigetsu and marine core MD01-2421 located in the northern Pacific Ocean. Additional palaeoclimate data from Lake Suigetsu (Japan) core SG06 including total organic carbon (TOC), total nitrogen (TN), TOC/TN ratios, carbon isotope analyses of organic carbon (δ13Corg) are also presented in accompanying publications to reconstruct orbital-scale monsoon dynamics in Japan
TOC, TOC/TN, δ13Corg and a new chronologic framework of core SG06 from Lake Suigetsu (Japan) since 146 ka
No full textWe present new palaeoclimate data from Lake Suigetsu (Japan) core SG06 including total organic carbon (TOC), total nitrogen (TN), TOC/TN ratios, carbon isotope analyses of organic carbon (δ13Corg) and Cryptomeria pollen abundance back to the penultimate glacial period (146 ka). The data is used to reconstruct orbital-scale monsoon dynamics in Japan. The sediments down to a maximum penetration depth of 73m were recovered in summer 2006 using a hydro-pressure thin-walled piston sampler and a floating platform by the Suigetsu 2006 Project Members. A new chronology for the Lake Suigetsu's sediments were developed beyond the well-constrained radiocarbon limit based on (1) tephrochronology, and (2) tephrostratigraphy, and (3) careful alignment of Cryptomeria pollen abundance between Lake Suigetsu and marine core MD01-2421 located in the northern Pacific Ocean
Flood layer frquency from Lake Suigetsu per 100 years
No full textFlood layer frquency from Lake Suigetsu per 100 year
Event layers in Lake Suigetsu vs. depth and time
No full textEvent layers in Lake Suigetsu vs. depth and tim
Flood layer frequency from Lake Suigetsu per 1000 years
No full textFlood layer frequency from Lake Suigetsu per 1000 year
Atlas of pollen, spores and further non-pollen palynomorphs recorded in the glacial-interglacial late Quaternary sediments of Lake Suigetsu, central Japan
No full textThe record of well preserved palynomorphs from sediment samples of Lake Suigetsu mirrors temporal changes in the flora around the lake and spatial changes in the vegetation cover of central Japan during the late Quaternary. This study presents photographic images of 169 identifiable types of moss, lycophyte and fern spores and pollen of gymnospermous and angiospermous plants from the SG06 core sediment obtained at a standard magnification of ca. 750x. Additionally non-pollen palynomorphs (NPPs), which appeared in the pollen slides, are documented, including remains of fungi, rhizopods, arthropods, rotifers, flatworms as well as green algae and plant tissue fragments. All documented taxa are presented in taxonomical order on 66 plates, including 55 plates for pollen and spores of higher plants and 11 plates for NPPs. This study renders an overview on quality of preservation and on the range of palynomorphs found in the last glacial-interglacial sediments of Lake Suigetsu, and furthermore, may serve as a handy and thorough guide for palynological investigations, aiming at the reconstruction of past vegetation, environmental and climate dynamics. (C) 2012 Elsevier Ltd and INQUA. All rights reserved
Identification of the Changbaishan \u27Millennium\u27 (B-Tm) eruption deposit in the Lake Suigetsu (SG06) sedimentary archive, Japan: Synchronisation of hemispheric-wide palaeoclimate archives
No full textThe B-Tm tephra, dispersed during the highly explosive Changbaishan \u27Millennium\u27 eruption (ca. 940 -950 CE) and a key marker layer within the Greenland ice cores, has now been identified in the Lake Suigetsu (SG06) sedimentary sequence, central Japan. The major element geochemistry of the volcanic glasses within this tephra layer are compared to a new glass dataset from the distal type-locality (Tomakomai Port, Hokkaido) and other published \u27Millennium\u27 eruption/B-Tm deposits, to verify this correlation. The discovery of the B-Tm tephra in the Lake Suigetsu record provides, to date, the most southerly identification of this ash and, crucially, the first direct tie-point between this high-resolution, mid-latitude palaeoclimate archive and the Greenland ice cores. These findings present significant encouragement for on-going research into the tephrostratigraphy of East Asia, focusing on the identification of widely-dispersed tephra layers which can facilitate the synchronisation of disparate palaeoclimate archives and thus enable the assessment of spatio-temporal variations in past climatic change. (C) 2016 The Authors. Published by Elsevier Ltd
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