scholarly journals Inferred spring discharge characteristics of the Saguenay River, Quebec between ca. 1850 and ca. 1900 based on sediment texture proxy data

2017 ◽  
Author(s):  
C T Schafer
Keyword(s):  
Spring Discharge ◽  
Sediment Texture ◽  
Proxy Data ◽  
Discharge Characteristics ◽  
Saguenay River

A 20th-Century Record of Climatologically Modulated Sediment Accumulation Rates in a Canadian Fjord

1987 ◽  
Vol 27 (3) ◽  
pp. 232-247 ◽  
Author(s):  
John N. Smith ◽  
Charles T. Schafer
Keyword(s):  
20Th Century ◽  
Sedimentation Rate ◽  
River Discharge ◽  
Sediment Accumulation ◽  
Spring Discharge ◽  
Accumulation Rates ◽  
Snow Storage ◽  
Saguenay Fjord ◽  
Spring Freshet ◽  
Saguenay River

AbstractThe geochronology of a gravity core collected from an anoxic, high sedimentation rate (>2.5 cm/yr) setting near the head of the Saguenay Fjord in Quebec has been established for the period 1900–1979 to a resolution of better than 1 yr using a constant flux 210Pb model. Interannual variations of the sedimentation rate of between 28 and 50% are caused by rapid inputs of coarse silt and fine sand during spring freshet events. A significant correlation between sand percentage and sediment accumulation rate reflects the increase in stream competence during the spring freshet; the sand percentage parameter can be used in conjunction with sediment size parameters to estimate temporal variations in river discharge intensity. Between 1914 and 1979 sediment accumulation rates were about 60% higher during the spring and summer compared to fall and winter seasons. Both the magnitude of the Saguenay River spring discharge and the quantity of precipitation stored as snow decrease through the 20th century suggesting that the freshet intensity was governed largely by natural rather than anthropogenic (e.g., dam construction) factors. A direct correlation between sand flux, peak river discharge, and a snow storage parameter provides a link between sediment texture and climate. Detailed analyses of the grain-size distributions for dated core intervals offer a method for the reconstruction of a proxy record of paleodischarge for the Saguenay River spring freshets.

DC Partial Discharge Characteristics of Polyphenylenesulfide / Calcium Carbonate Composite Insulating Material

2017 ◽  
Vol 137 (9) ◽  
pp. 536-541
Author(s):  
Tomohiro Kawashima ◽  
Tomohiro Yamada ◽  
Yoshinobu Murakami ◽  
Masayuki Nagao ◽  
Sou Ozaki ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Partial Discharge ◽  
Discharge Characteristics ◽  
Insulating Material

Investigation of Partial Discharge Characteristics Induced by X-ray Irradiation in Artificial Cavity in Epoxy Resin

2012 ◽  
Vol 132 (4) ◽  
pp. 284-290 ◽  
Author(s):  
Masakazu Higashiyama ◽  
Hajime Takada ◽  
Masayuki Hayashi ◽  
Masahiro Kozako ◽  
Masayuki Hikita ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Partial Discharge ◽  
Discharge Characteristics ◽  
X Ray ◽  
Artificial Cavity

Effect of White Discharge Trace on Impulse Creeping Discharge Characteristics in Oil/Pressboard Composite Insulation System

2017 ◽  
Vol 137 (4) ◽  
pp. 188-195
Author(s):  
Takao Akahoshi ◽  
Kyunghoon Jang ◽  
Masahiro Kozako ◽  
Masayuki Hikita ◽  
Soichiro Kainaga ◽  
...  
Keyword(s):  
Insulation System ◽  
Discharge Characteristics ◽  
Creeping Discharge

Snowmelt discharge characteristics Sierra Nevada, California

2005 ◽  
Author(s):  
David Peterson ◽  
Richard Smith ◽  
Iris Stewart ◽  
Noah Knowles ◽  
Chris Soulard ◽  
...  
Keyword(s):  
Sierra Nevada ◽  
Discharge Characteristics
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