scholarly journals Storage‐discharge characteristics of an active rock glacier catchment in the Innere Ölgrube, Austrian Alps

2021 ◽  
Author(s):  
Thomas Wagner ◽  
Simon Kainz ◽  
Karl Krainer ◽  
Gerfried Winkler
Keyword(s):  
Rock Glacier ◽  
Discharge Characteristics ◽  
Austrian Alps

Influence of glacier advance on the development of the multipart Riffeltal rock glacier, Central Austrian Alps

2015 ◽  
Vol 40 (7) ◽  
pp. 965-980 ◽  
Author(s):  
Jana-Marie Dusik ◽  
Matthias Leopold ◽  
Tobias Heckmann ◽  
Florian Haas ◽  
Ludwig Hilger ◽  
...  
Keyword(s):  
Rock Glacier ◽  
Austrian Alps ◽  
Glacier Advance

scholarly journals The first consistent inventory of rock glaciers and their hydrological catchments of the Austrian Alps

2020 ◽  
Vol 113 (1) ◽  
pp. 1-23 ◽  
Author(s):  
Thomas Wagner ◽  
Roswitha Pleschberger ◽  
Simon Kainz ◽  
Markus Ribis ◽  
Andreas Kellerer-Pirklbauer ◽  
...  
Keyword(s):  
Laser Scanning ◽  
Methodological Approach ◽  
Shallow Aquifer ◽  
Rock Glacier ◽  
Austrian Alps ◽  
Crystalline Bedrock ◽  
Aquifer Systems ◽  
Catchment Areas ◽  
Rock Glaciers ◽  
Alpine Catchments

AbstractA first consistent and homogenized polygon-based inventory of rock glaciers of the Austrian Alps is presented. Compiling previous inventories and updating them by using digital elevation models (1 m grid resolution) derived from airborne laser scanning yield a dataset of 5769 rock glaciers in a ca. 48400 km2 large area. A consistent methodological approach for assigning attributes, stored in a detailed attribute table, was developed and applied here to improve comparability and reproducibility. The majority (60 %) of the studied landforms is considered to be relict (no permafrost); the remaining 40 % may still contain permafrost ice and are thus classified as intact. Rock glaciers range in elevation from 476 to 3312 m a.s.l. and cover a total area of 303 km2. The distribution of rock glaciers is mainly related to the topography of the Austrian Alps and related effects such as past glaciation history.In addition, a comprehensive analysis of the hydrological catchment areas of all individual rock glaciers was carried out. A hydrological catchment analysis in rock glacier areas is of great interest for sustainable water management issues in alpine catchments as these landforms represent shallow aquifer systems with a relatively high storage and thus buffer capability, especially in crystalline bedrock areas. A total area of almost 1280 km2 is drained through rock glaciers.The presented rock glacier and rock glacier catchment inventories provide an important basis for further research, particularly for a better understanding of the hydrogeology and geomorphology of alpine catchments and their potential alteration in the light of climate change, but also in terms of paleoglaciation and deglaciation in the Alpine Lateglacial to Holocene period. As such, the inventories are seen as an important base to stimulate further research.

scholarly journals Storage-discharge characteristics of an alpine active rock glacier catchment – a multidisciplinary approach applied to the Innere Ölgrube, Austrian Alps

2020 ◽  
Author(s):  
Thomas Wagner ◽  
Simon Kainz ◽  
Karl Krainer ◽  
Gerfried Winkler
Keyword(s):  
Shallow Groundwater ◽  
Temporal Variations ◽  
Base Layer ◽  
Rock Glacier ◽  
Discharge Characteristics ◽  
Ice Melt ◽  
Groundwater Aquifer ◽  
Rainfall Runoff Model ◽  
Alpine Catchments ◽  
The Moment

The active rock glacier “Innere Ölgrube”, and its catchment area (Ötztal Alps, Austria) are assessed using various hydro(geo)logical tools to provide a thorough catchment characterization and to quantify temporal variations in recharge and discharge components. During the period from June 2014 to July 2018, an average contribution derived from snowmelt, ice melt and rainfall of 35,8 %, 27,6 % and 36,6 %, respectively, is modelled for the catchment using a rainfall-runoff model. Discharge components of the rock glacier springs are distinguished using isotopic data as well as other natural and artificial tracer data, when considering the potential sources rainfall, snowmelt, ice melt and groundwater. Seasonal as well as diurnal variations in runoff are quantified and the importance of shallow groundwater within this rock glacier-influenced catchment is emphasized. Water derived from ice melt is suggested to be provided mainly by melting of two small cirque glaciers within the catchment and subordinately by melting of permafrost ice of the rock glacier. The active rock glacier is characterized by a layered internal structure with an unfrozen base layer responsible for groundwater storage and retarded runoff, a main permafrost body contributing little to the discharge (at the moment) by permafrost thaw and an active layer responsible for fast lateral flow on top of the permafrost body. Snowmelt contributes at least 1/3rd of the annual recharge. During droughts, meltwater derived from two cirque glaciers provides runoff with diurnal runoff variations; however, this discharge pattern will change as these cirque glaciers will ultimately disappear in the future. The storage-discharge characteristics of the investigated active rock glacier catchment are an example of a shallow groundwater aquifer in alpine catchments that ought to be considered when analysing (future) river runoff characteristics in alpine catchments as these provide retarded runoff during periods with little or no recharge.

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

Partial Discharge Characteristics of Electrical Treeing in XLPE Insulation Exposed to Voltages of Different Rise Times

2019 ◽  
Vol 139 (2) ◽  
pp. 85-91 ◽  
Author(s):  
Thomas Hammarström ◽  
Tord Bengtsson ◽  
Stanislaw M. Gubanski
Keyword(s):  
Partial Discharge ◽  
Discharge Characteristics ◽  
Electrical Treeing ◽  
Xlpe Insulation

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

Influence of Switching Impulse Voltage Repetitive Superimposition and Internal Conditions of the Oil Gap Defect on Partial Discharge Characteristics of Oil Impregnated Paper Insulation System

2019 ◽  
Vol 139 (6) ◽  
pp. 446-454
Author(s):  
Yu Iwashita ◽  
Masahiro Kozako ◽  
Masayuki Hikita ◽  
Yuta Makino ◽  
Takashi Kurihara ◽  
...  
Keyword(s):  
Partial Discharge ◽  
Insulation System ◽  
Discharge Characteristics ◽  
Impulse Voltage ◽  
Paper Insulation

Effects of AC Electrical Stress, Oil Pressure and Insulation Construction on Time Transition of Partial Discharge Characteristics on Oil-impregnated Paper Insulation System for Oil-filled Cables

2020 ◽  
Vol 140 (4) ◽  
pp. 261-270
Author(s):  
Yuta Makino ◽  
Yuu Iwashita ◽  
Takashi Kurihara ◽  
Toshihiro Takahashi ◽  
Tatsuki Okamoto
Keyword(s):  
Partial Discharge ◽  
Insulation System ◽  
Discharge Characteristics ◽  
Electrical Stress ◽  
Paper Insulation
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