
Evgeny Andreevich PodolskiyHokkaido University | Hokudai · Arctic Research Center
Evgeny Andreevich Podolskiy
Ph.D.
About
78
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Introduction
I am a geoscientist fascinated by the Cryosphere and its processes. In particular, I am interested in observational, experimental and numerical studies on snow avalanches, glaciers, meteorology and earthquakes.
Publications
Publications (78)
The last decade witnessed an explosion in yearly number of publications on passive glacier seismology. The seismic signals from a wide range of glacier-related processes fill a broad band of frequencies (from 10^−3 to 10^2 Hz) and moment magnitudes (from M–3 to M7) providing a fresh and unprecedented view on fundamental processes in the cryosphere....
Glacier microseismicity is a promising tool to study glacier dynamics. However, physical processes connecting seismic signals and ice dynamics are not clearly understood at present. Particularly, the relationship between tide-modulated seismicity and dynamics of calving glaciers remains elusive. Here we analyze records from an on-ice seismometer pl...
Snowpack weak layers may fail due to excess stresses of various natures,
caused by snowfall, skiers, explosions or strong ground motion due to
earthquakes, and lead to snow avalanches. This research presents a numerical
model describing the failure of "sandwich" snow samples subjected to
shaking. The finite element model treats weak layers as inter...
The analysis of historical avalanche data is important when developing accurate hazard
maps. The record of snow-avalanche disasters on Sakhalin and the Kuril Islands is incomplete, due to the
historical division into periods of Japanese and Russian rule. Here we combine and analyze data from
Japanese and Russian sources to reconstruct a continuous...
A mesoscale atmospheric model, the Weather Research and Forecasting
model (WRF), was used for a case study that reconstructs mid-spring
episodes of rime formation at Mt. Zao, Japan. One particularly
interesting and rare form of rime was observed. The formations were
feathery, opaque aggregates of granular ice 15-30 cm long, called
"shrimp tails" in...
Ice discharge from the Greenland ice sheet is controlled by tidewater glacier flow speed, which shows large variations on different timescales. Short-term speed variations are key to understanding the physical processes controlling glacial motion, but studies on Greenlandic tidewater glaciers, particularly near the calving front, are sparse. Here,...
Understanding the deployment ranges and behavior of fishing gear in relation to fishery efficiency will help us grasp the potential impact of future shifts in the fishery on resources and fishing activities. Fisheries for Greenland halibut are conducted by boat in open water during the summer. However, in winter, fishermen travel to fishing grounds...
Inferring animal behavior from irregular tracking data is a challenging area of research. It is particularly difficult to determine if whales, who intermittently explore different depths while staying in the same acoustic medium, synchronize their days with their prey and each other over kilometer-scale distances. Here, we aim to better understand...
Ice discharge from the Greenland ice sheet is controlled by tidewater glacier flow speed, which shows significant variations in different timescales. Short-term speed variations are key to understanding the physical processes controlling glacial motion, but studies are sparse for Greenlandic tidewater glaciers, particularly near the calving front....
The child-like question of why birds sing in the morning is difficult to answer, especially in polar regions. There, in summer animals live without the time constraints of daylight, and little is known about the rhythmicity of their routines. Moreover, in situ monitoring of animal behavior in remote areas is challenging and rare. Here, we use audio...
Basal ice motion is a key process in glacier flow, playing a crucial role in fast glacier motion and short-term ice speed variations. However, the mechanisms of basal motion remain poorly understood because direct observations are sparse. This paper reports the design and performance of a “ploughmeter” developed for deployment in a borehole to obse...
Plain Language Summary
Glacier monitoring is essential for sea‐level‐rise forecasting, water management, and providing an early warning of potential glacial flooding; however, the necessary monitoring data are currently scarce and often difficult to collect. Recent studies on turbulent streams and melting glaciers have suggested that the acoustic s...
Detecting structures within the continuous diving behavior of marine animals is challenging, and no universal framework is available. We captured such diverse structures using chaos theory. By applying time-delay embedding to exceptionally long dive records (83 d) from the narwhal, we reconstructed the state-space portrait. Using measures of chaos,...
Measurements of underwater sound are still scarce in the rapidly changing Arctic. Tele-seismically detectable glacial earthquakes caused by iceberg calving have been known for nearly two decades but their underwater sound levels remain undocumented. Here, we present near-source underwater sound records from a kilometer-scale iceberg calving associa...
Shearing along subduction zones, laboratory experiments on analogue faults, and sliding along glacier beds are all associated with aseismic and co-seismic slip. In this study, an ocean-bottom seismometer is deployed near the terminus of a Greenlandic tidewater glacier, effectively insulating the signal from the extremely noisy surface seismic wavef...
About 70% of Earth’s surface is covered by ocean, for which seismic observations are challenging. Seafloor seismology overcame this fundamental difficulty and radically transformed the earth sciences, as it expanded the coverage of seismic networks and revealed otherwise inaccessible features. At the same time, there has been a recent increase in t...
In the Arctic, subglacial discharge plumes have been recently recognised as a key driver of fjord-scale circulation. However, owing to the danger that accompanies prolonged observations at plumes, no time-series data are available. Here, we present results showing the chaotic and irregular dynamics of a plume revealed by continuous subsurface monit...
Ice mass loss from the Greenland ice sheet is the largest single contributor to sea level rise in the 21st century. The mass loss rate has accelerated in recent decades mainly due to thinning and retreat of its outlet glaciers. The diverse calving mechanisms responsible for tidewater glacier retreat are not fully understood yet. Since a tidewater g...
Ice mass loss from the Greenland Ice Sheet is the largest single contributor to sea-level rise in the 21st century. The mass loss rate has accelerated in recent decades mainly due to thinning and retreat of its outlet glaciers. The diverse calving mechanisms responsible for tidewater glacier retreat are not fully understood yet. Since a tidewater g...
We recorded the ice motion and icequakes on the floating part of Langhovde Glacier in East Antarctica to better understand the dynamic behavior of ice shelves and floating tongues. Diurnal and semi-diurnal variations in ice motion and seismicity were simultaneously observed at all four global navigation satellite system and three seismic stations o...
Measuring glacier calving magnitude, frequency and location in high temporal resolution is necessary to understand mass loss mechanisms of ocean-terminating glaciers. We utilized calving-generated tsunami signals recorded with a pressure sensor for estimating the calving flux of Bowdoin Glacier in northwestern Greenland. We find a relationship betw...
Calving plays a key role in the recent rapid retreat of glaciers around the world. However, many processes related to calving are poorly understood since direct observations are scarce and challenging to obtain. When calving occurs at a glacier front, surface-water waves arise over the ocean or a lake in front of glaciers. To study calving processe...
Outlet glaciers in Greenland have retreated and lost mass over the past decade. Understanding the dynamics of tidewater glaciers is crucial for forecasting sea-level rise and for understanding the future of the Greenland Ice Sheet, given the buttressing support that tidewater glaciers provide to inland ice. However, the mechanisms controlling glaci...
The Greenland ice sheet and peripheral ice caps are rapidly losing mass. This mass change has been captured by satellite remote sensing, but more detailed investigations are necessary to understand the spatiotemporal variations and mechanism of the ice loss. It has increased particularly in northwestern Greenland, but in-situ data for northern Gree...
Japan Consortium for Arctic Environmental Research (JCAR)
http://www.jcar.org/documents/JCAR_Newsletter_No_4.pdf
Популярный синопсис о статье опубликованной ранее в Cold Regions Science and Technology.
Systematic snow disposal from street cleaning operations may create large anthropogenic snow/ice bodies. Such man-made cryospheric objects may be considered as complex geophysical interfaces between the atmosphere, landscape, soils and hydrosphere. Urban snow patches not only produce large amounts of meltwater (and therefore a risk of flooding), bu...
Researchers from France (IRSTEA), Japan and Russia discover that the islands disputed between Russia and Japan share a tragic history of encounters with snow avalanche disasters, and that Sakhalin and the Kuril Islands make up the world’s deadliest avalanche-prone region.
Natural sintering in ice is a fundamental process determining mechanical
properties of various ice forms. According to the literature, limited data
are available about the complex subjects of snow sintering and bond
formation. Here, through cold laboratory mechanical tests with a new shear
apparatus we demonstrate time-dependent effects of isotherm...
Snowpack weak layers may fail due to excess stresses
of various natures, caused by snowfall, skiers, explosions or
strong ground motion due to earthquakes, and lead to snow
avalanches. This research presents a model describing the behavior
of "sandwich" snow samples subjected to shaking. The Finite
Element model treats weak layers as interfaces wit...
Natural sintering in ice is a fundamental process determining mechanical properties of various ice
forms. According to the literature, limited data are available about the complex subjects of snow
sintering and bond formation. Here, through cold laboratory mechanical tests with a new shear
apparatus we demonstrate time-dependent effects of isotherm...
Supplementary material for a paper:
Podolskiy, E. A., K. Izumi, V. E. Suchkov, and N. Eckert (2014). Physical and societal statistics for a century of snow avalanche hazards on Sakhalin and the Kuril Islands (1910-2010). Journal of Glaciology, [accepted].
The panels of this figure show meteorological data from several stations used for computing...
More than forty years ago the Finite Element method, or FEM, became one of the most common tools in a structural engineer's tool kit and also emerged as a common instrument of analysis in snow science. A significant number of studies focused on a wide spectrum of questions, ranging from microstructure modeling based on X-ray derived geometry to stu...
This is an article by Emily Underwood (Science NOW) highlighting our publication [Podolskiy et al., 2012, JGR]:
http://news.sciencemag.org/2012/07/ice-and-men?ref=hp
Подольский Е. 2011. Ледяные миры. Вертикальный Мир, 96, 106-118. - Первое место в конкурсе "Наука-обществу": "Лучшая научно-популярная статья" (2011) http://strf.ru/material.aspx?CatalogId=222&d_no=42660#.UoCp-o0hBRY
Strong ground motions caused by earthquakes can induce catastrophic avalanches. Massive snow avalanching has also been observed on slopes near quarries and underground mines where ground motions are produced by explosives. To address a lack of information regarding seismogenic snow avalanches, we have compiled an inventory to document case historie...
We conducted experiments on the stability of snow, subjecting snow to vibrations, with the aim of improving our understanding of poorly studied mechanisms behind the triggering of avalanches during earthquakes. Most experiments were carried out on a specially constructed shaking table using artificial snowpacks containing a weak layer. Acceleration...
It is known that strong ground motions caused by earthquakes can upset the critical balance between stress and strength within the snowpack, thereby inducing catastrophic avalanches. Despite the importance of such events and the large areas of land susceptible to this type of slope failure (3.1% of land area worldwide), the topic of seismic trigger...
A covariation of recent global environmental changes and seismicity on Earth is demonstrated. Presently, rising concern about anthropogenic activities and their consequences on the cryosphere and environment have always overlooked changes related to future tectonic activity. Possible factors affecting an increase in the number of earthquakes and vo...
Present report briefly outlines specific issue of snow avalanches in the Turkish republic (with some earthquake and glacier related references) and describes Japan avalanche delegation visit to the Turkish Republic, 18 - 25 March 2009, to Ankara and Eastern Anatolia (Pontus Mts. and Palandoken range) for acquaintance with problems of this avalanche...
large-scale dry slab avalanche occurred at Makunosawa valley in Myoko at 13:48 on February 17, 2008. The starting zone seemed to be the east-southeast facing slope around 1770m a.s.l. The point of farthest reach of debris was around 770m a.s.l., and the horizontal runout distance was about 3000m. The area of the runout zone was about 10ha, and the...
Podolskiy E., Chernous P., Abe O., Barashev N., Nishimura K.
[Extended version, initially published as Podolskiy (2007), Data of Glaciological Studies, 103].
Подольский Е. 2006. Гексагональное Чудо, Вертикальный Мир, 59, 100-105.
Please, note, that this is a translation of Japanese paper on rime formation (icing) at Mt. Zao, Japan. Thus Podolskiy E. A. and Seo Y. are not co-authors, but translators !!!
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