Remnants of an ancient forest on the continental shelf of northwest Japan     

NORIYUKI NASU  SHOJI FUJII  KANTARO FUJIOKA  CHIAKI IGARASHI  HOTAKA KAWAHATA  HARUNA MAPPA  KENJI KONISHI  TAKEO TANAKA  TAKASHI SHIMODA 《Boreas: An International Journal of Quaternary Research》1983,12(1):13-16

Tree stumps in a standing position have been discovered in 20 to 40 meters of water in Toyama Bay, Japan. Radiocarbon dated samples from two of these stumps yielded ages of 8.480±70 and 9.060±80 years B.P., indicating that the stumps are remnants of a forest that existed during thc early Holocene.  相似文献   

Carbon budget of coral reef systems: an overview of observations in fringing reefs, barrier reefs and atolls in the Indo-Pacific regions     

ATSUSHI SUZUKI  HODAKA KAWAHATA 《Tellus. Series B, Chemical and physical meteorology》2003,55(2):428-444

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Vertical and latitudinal variations in amino acid fluxes and compositions of settling particles along 175°E in the North Pacific Ocean     

LALLAN P. GUPTA  HODAKA KAWAHATA 《Tellus. Series B, Chemical and physical meteorology》2003,55(2):445-455

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Submerged forest off Nyuzen, Kurobegawa alluvial fan, Toyama Bay, Central Japan   总被引：1，自引：0，他引：1  

SHOJI FUJII  NORIYUKI NASU  ALEC J. SMITH  NORIO FUJI  YOSHIHIKO MIZUTANI  MISABURO SHIMAKURA  KENJI KONISHI  CHIAKI IGARASHI  JUNRYO MURAMOTO  TOSHIO TAKEMURA  TAKASHI SHIMODA  SAM BOGGS JR.  KANTARO FUJIOKA  HARUNA MAPPA  HOTAKA KAWAHATA  YONG SAE KONG  TAKEO TANAKA 《Boreas: An International Journal of Quaternary Research》1986,15(4):265-277

Remnants of a submerged ancient forest have been found on the continental shelf of NW Japan off the Kurobe alluvial fan in Toyama Bay. The remains, standing tree stumps and roots, are located at depths between 20 and 40 m and ages of 8,000 years B.P. to 10,000 years B.P. have been determined by the ¹⁴C method. Alnus and Salix are the most commonly preserved genera and the trees grew on the now sub-merged seaward margin of the alluvial fan. Pollen analysis permits an estimate of palaeo-temperatures 2°C to 4°C lower than at present. Diatoms give some indication of salinity variations at the time of forest development and suggest brackish water, possible lagoonal conditions. The distribution of the stumps and roots suggests that there were probably two separate forests which were overwhelmed by rising sea-level and flash flood deposits. The present day submarine exposures may be due to recent submarine erosion related to the seaward movement of flood waters which passed from the fan into the upper reaches of the Toyama submarine canyon system.  相似文献