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Trichoptera fauna of the Kushiro Marsh, northern Japan, with particular references to the fauna of Lake Takkobu
the Kushiro Marsh Japan.
2009/4/1
2003-2006, the Trichoptera fauna of the Kushiro Marsh was studied in Lake Takkobu, Hokkaido, northern Japan, using chemical light, black light, Malaise trap and insect net. Adults of 52 species belong...
Change in macrophytic flora of Lake Takkobu, Kushiro, Japan, in past 30 years
aquatic macrophyte decline eutrophication
2009/4/1
The change in macrophytic flora in Lake Takkobu since the mid-1970s was briefly described. At that period floating-leaved plant communities dominated by species such as Nuphar pumila and Potamogeton n...
Predominance of Stenopsyche marmorata Navas larvae immediately downstream of Iwaonai Dam in the Teshio River, Hokkaido, Japan
dam reservoir
2009/4/1
We examined the density of aquatic invertebrates downstream from Iwaonai Dam in the upper reach of the Teshio River, Hokkaido.
Statistical atmospheric downscaling for rainfall estimation in Kyushu Island, Japan
atmospheric downscaling precipitation rainfall
2009/3/23
The present paper develops linear regression models based on singular value decomposition (SVD) with the aim of downscaling atmospheric variables statistically to estimate average rainfall in the Chik...
Geoelectrical laboratory and field studies of groundwater occurrence in a landslide area: a case study from Japan
landslide investigations electrical resistivity water table snowmelt
2009/3/5
We present the results of electrical resistivity surveys carried out to estimate the seasonal variation of the water table level in a large-scale landslide area of Tertiary geology in Japan. One long ...
Euler deconvolution of gravity data in Geothermal Reconnaissance; the Obama geothermal area, Japan
Bouguer gravity Obama geothermal area Euler deconvolution
2009/3/5
Obama geothermal area is located on the western side of Kyushu Island, southwestern Japan. This area is characterized by high potential geothermal resources that attract most of researchers to study t...
A Numerical Study of the Kuroshio South of Japan
Kuroshio quasi-geostrophic boundary constraints nonlinear
2009/2/7
A numerical model is used to study the interaction of the Kuroshio with boundary constraints south of Japan. The model consists of two layers with the lower layer inert, and is both nonlinear and quas...
An Event in Water Exchange between Continental Shelf and the Kuroshio off Southern Japan：Lagrangian Tracking of a Low-Salinity Water Mass on the Kuroshio
Water Exchange Continental Shelf Low-Salinity Water Mass Kuroshio
2009/1/7
Low-salinity water masses were occasionally observed in spring and summer on the surface of the Kuroshio, south of Japan. Many of the masses were accompanied by excessive discharge of fresh water from...
The nonlinear leakage of Kuroshio water (via the Tsushima Strait) into the Sea of Japan is examined using a “reduced gravity” analytical model. The flow in our conceptual model results from the zonal ...
Seasonal Variation in Volume Transport of the Kuroshio South of Japan
Seasonal Variation Volume Transport Kuroshio
2008/12/15
A two-layer numerical model driven by the observed wind stress compiled by K. Kutsuwada and T. Teramoto is used to study the seasonal variation in volume transport of the Kuroshio south of Japan. The ...
Model Study of Flow Conditions Causing the Large Meander of the Kuroshio South of Japan
large-meander Flow Conditions non-large-meander
2008/12/11
The upstream conditions for large-meander (LM) and non-large-meander (NLM) paths of the Kuroshio south of Japan were examined by calculating the current axis with a steady model imposed upstream flow ...
Anomalous ELF phenomena in the Schumann resonance band as observed at Moshiri (Japan) in possible association with an earthquake in Taiwan
ELF phenomena Schumann resonance band possible association earthquake in Taiwan
2010/1/4
The ELF observation at Moshiri (geographic coordinates: 44.29° N, 142.21° E) in Hokkaido, Japan, was used to find anomalous phenomena in the Schumann resonance band, possibly associated with a large e...
Factors influencing the initiation of blooms of the raphidophyte Heterosigma akashiwo and the diatom Skeletonema costatum in a port in Japan
Factors influencing the initiation of blooms raphidophyte Heterosigma akashiwo the diatom Skeletonema costatum in a port in Japan
2014/4/21
We investigated how environmental factors initiate Heterosigma akashiwo and Skeletonema costatum blooms from resting stages in bottom sediments in a shallow port over 2 yr. Using field-collected sedim...
Detection of regional scale sea-to-air oxygen emission related to spring bloom near Japan by using in-situ measurements of the atmospheric oxygen/nitrogen ratio
sea-to-air oxygen emission spring bloom Japan atmospheric oxygen/nitrogen ratio
2008/11/11
We have been carrying out in-situ monitoring of atmospheric O2/N2 ratio at Cape Ochi-ishi (COI; 43°10' N, 145°30' E) in the northern part of Japan since March 2005 by using a modified gas chromatograp...
Temperature changing process of the Hokkaido (Japan) earthquake on 25 September 2003
Temperature changing process the Hokkaido (Japan) earthquake
2009/12/30
The paper introduced the model of the additive tectonics stress from celestial tide-generating force. The model can be used to explain the relationship between additive tectonics stress and seismic fa...