Subject: 4 selected - PubAg Search Results

Author:: James Goff; Jasper Knight; Daisuke Sugawara; James P. Terry
Source:: Science of the total environment 2016 v.544 pp. 18-23
ISSN:: 0048-9697
Subject:: bedload; coasts; dams (hydrology); earthquakes; geophysics; models; rivers; sediment traps; sediments; suspended sediment; tsunamis; watersheds; Japan
Abstract:: ... The expected geomorphic after-effects of the Mw 9.0 Tōhoku-oki earthquake of 11 March 2011 (eastern Japan) are summarized by a schematic model of seismic driving, which details seismogenic disturbances to sediment systems that affect the rate or timing of sediment delivery to coastlines over timescales of 10²–10⁴years. The immediate physical environmental responses to this high-magnitude earthquak ...
DOI:: 10.1016/j.scitotenv.2015.11.106
: https://doi.org/10.1016/j.scitotenv.2015.11.106

Author:: Sansfica M. Young; Hiroaki Ishiga
Source:: Environmental monitoring and assessment 2014 v.186 no.12 pp. 8267-8289
ISSN:: 0167-6369
Subject:: chromium; copper; dams (hydrology); environmental monitoring; guidelines; lead; rivers; sediment contamination; sediments; zinc; zirconium; Japan
Abstract:: ... The aim of this study was to determine if Arase dam gate removal and flushing elevated concentrations of any trace elements in Kuma River and Yatsushiro Bay sediments or caused riverine environmental change. The Arase dam gate on the Kuma River was opened in April 2010. Surface and bottom sediments were compared using 10-cm-long cores (2011) and two grain size fractions. Surface sediment data from ...
DOI:: 10.1007/s10661-014-4002-4
PubMed:: 25182684
: https://doi.org/10.1007/s10661-014-4002-4

Author:: Hisayuki Teraoka; Michihiro Ogawa
Source:: Journal of environmental quality 1984 v.13 no.3 pp. 453-459
ISSN:: 0047-2425
Subject:: air pollution; basins; cadmium; chromium; cobalt; copper; dams (hydrology); estuaries; iron; lead; manganese; nickel; river water; rivers; rocks; sediments; silver; tin; topsoil; total suspended solids; watersheds; zinc; Japan
Abstract:: ... Concentrations of 22 elements in suspended and dissolved solids in rivers, various sieved particles, and interstitial waters of dam sediments were determined in the Takahashi River Basin on whose estuary stands the Mizushima industrial area, one of the biggest in Japan. In this basin, because of the increased atmospheric pollution, the input of the volatile elements Zn, Cd, Sn, Pb, and Ag from the ...
DOI:: 10.2134/jeq1984.00472425001300030025x
: https://doi.org/10.2134/jeq1984.00472425001300030025x

Author:: Hiroaki Saito; Hiroshi Hashimoto; Teruaki Hino; Masaharu Motokawa
Source:: Mammal study 2019 v.44 no.1 pp. 1-11
ISSN:: 1348-6160
Subject:: concrete; dams (hydrology); rivers; sediments; shrews; streams; surveys; Japan
Abstract:: ... The concrete walls of check dams are considered a physical barrier for aquatic and semiaquatic animals that inhabit mountain streams. Traveling behaviors around concrete check dams by the Japanese water shrew Chimarrogale platycephalus, a semi-aquatic mammal, were directly observed via radio-tracking in Kamikoshi Stream in central Honshu, Japan. Traveling behaviors were mainly observed on the wet ...
DOI:: 10.3106/ms2017-0056
: https://doi.org/10.3106/ms2017-0056

Author:: Oliver Korup; Yuichi Hayakawa; Alexandru T. Codilean; Yuki Matsushi; Hitoshi Saito; Takashi Oguchi; Hiroyuki Matsuzaki
Source:: Earth-science reviews 2014 v.135 pp. 1-16
ISSN:: 0012-8252
Subject:: Holocene epoch; climate; dams (hydrology); deformation; islands; landslides; mass transfer; mountains; prediction; rain; rivers; sediment transport; sediment yield; sediments; tectonics; topographic slope; watersheds; Japan; Pacific Ocean; South East Asia
Abstract:: ... Quantifying volumes and rates of delivery of terrestrial sediment from island arcs to subduction zones is indispensable for refining estimates of the thickness of trench fills that may eventually control the location and timing of submarine landslides and tsunami-generating mega-earthquakes. Despite these motivating insights, knowledge about the rates of erosion and sediment export from the Japane ...
DOI:: 10.1016/j.earscirev.2014.03.004
: https://doi.org/10.1016/j.earscirev.2014.03.004

Author:: Dang Minh Hai; Shinya Umeda; Masatoshi Yuhi
Source:: Water 2019 v.11 no.9 pp. -
ISSN:: 2073-4441
Subject:: aerial photography; anthropogenic activities; dams (hydrology); data collection; empirical models; rivers; sediments; spatial variation; surveys; temporal variation; topography; watersheds; Japan
Abstract:: ... Long-term variation in the morphological characteristics of rivers is complicated as a result of temporally and spatially variable natural processes and anthropogenic disturbances. Better understanding of their relationship is therefore important for river basin management. The present study conducted a detailed analysis of a long-term dataset consisting of a 58-year topographic survey and related ...
DOI:: 10.3390/w11091852
: https://doi.org/10.3390/w11091852

Author:: Kei Nukazawa; Shinsuke Kajiwara; Tsuyoshi Saito; Yoshihiro Suzuki
Source:: Ecological engineering 2020 v.145 pp. 105726
ISSN:: 0925-8574
Subject:: Heptageniidae; Simuliidae; aquatic insects; community structure; dams (hydrology); dredging; electric power; environmental impact; fauna; flood control; multidimensional scaling; multivariate analysis; power generation; rivers; sediments; species richness; streams; summer; winter; Japan
Abstract:: ... Dam sedimentation is a crucial issue that interferes with flood control and electric power generation. To address this, sediment dredging, bypass tunnel, flushing, and sluicing have been applied. Despite the potential impacts of these operations on stream environments, few studies have explored the environmental/ecological consequences of such regime shifts in sediment dynamics. Specifically, impa ...
DOI:: 10.1016/j.ecoleng.2020.105726
: https://doi.org/10.1016/j.ecoleng.2020.105726

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