Two Decades of Seismicity in Storfjorden, Svalbard Archipelago, from Regional Data

2021 ◽  
Author(s):  
Myrto Pirli ◽  
Johannes Schweitzer ◽  
Berit Paulsen ◽  
Yana V. Konechnaya ◽  
Galina N. Antonovskaya
Keyword(s):  
Data Processing ◽  
The Arctic ◽  
Earthquake Occurrence ◽  
Minimum Level ◽  
Medium Term ◽  
Automatic Data ◽  
Svalbard Archipelago ◽  
Parametric Data ◽  
Processing Algorithms ◽  
First Time

Abstract About two decades of earthquake parametric data for the area of Storfjorden offer the best medium-term image of seismicity yet for the arctic Svalbard Archipelago. Although seismic activity is dominated by the 2008 Mw 6.1 earthquake and its compound sequence and to a far lesser extent the 2016 Mw 5.1 event near Edgeøya and its aftershocks, as well as episodic earthquake occurrence at Heerland, background levels can be established for the first time, showing that earthquake occurrence in the region shows an episodic but stable character. A certain, minimum level of coverage by the regional seismic network is crucial for seismicity to be mapped accurately in space and time, whereas the efficiency of automatic data processing algorithms also plays a role. The evolution of the network and developments in data processing suggest that images of seismicity prior to mid-2000s and at more remote regions of the Archipelago are biased. Despite restrictions, some safe conclusions can be drawn about present-day seismotectonics. The results have implications for the tectonic placement of the region and the assessment of seismic hazard.

scholarly journals A new Early Devonian (Emsian) arthrodire from the Northwest Territories, Canada, and its significance for paleogeographic reconstruction

2017 ◽  
Vol 54 (5) ◽  
pp. 461-476 ◽  
Author(s):  
Hans-Peter Schultze ◽  
Stephen L. Cumbaa
Keyword(s):  
Northwest Territories ◽  
Arctic Region ◽  
Shoulder Girdle ◽  
The Arctic ◽  
Svalbard Archipelago ◽  
Early Devonian ◽  
Red Sandstone ◽  
Marine Deposits ◽  
The Baltic ◽  
First Time

An heterostiid arthrodire, Herasmius dayi sp. nov., is described from upper Lower Devonian marine deposits of the Bear Rock Formation along the Anderson River, Northwest Territories, Canada. New elements described for the genus for the first time include the suborbital, submarginal (also new for the family Heterostiidae), the lateral shoulder girdle with posterior lateral, anterior dorso-lateral, and posterior dorso-lateral plates and possible infragnathal plate. We present a new reconstruction of the cranial region of Herasmius, previously known only from supposedly freshwater – shallow marine deposits of roughly the same age in the Wood Bay Group of Spitsbergen. The late Early Devonian fishes that are common to the Arctic region of northwestern Canada and the island of Spitsbergen in the Svalbard archipelago of Norway, the porolepiform Heimenia and the arthrodire Herasmius described here, demonstrate the existence of a barrier-free paleogeographic connection between those continental blocks by the late Early Devonian. Comparison of the entire Anderson River vertebrate fauna with other boreal faunas of similar age indicates additional paleogeographic connections north of and around the Old Red Sandstone Continent to the Baltic region, central Europe, and even to the New Siberian Islands and South China, in contrast to most current published paleogeographical reconstructions.

scholarly journals Automatic Data Processing to Achieve a Safe Telemedical Artificial Pancreas

2009 ◽  
Vol 3 (5) ◽  
pp. 1039-1046 ◽  
Author(s):  
M. Elena Hernando ◽  
Gema García-Sáez ◽  
Iñaki Martínez-Sarriegui ◽  
Agustín Rodríguez-Herrero ◽  
Carmen Pérez-Gandía ◽  
...  
Keyword(s):  
Risk Management ◽  
Data Analysis ◽  
Data Processing ◽  
In Silico ◽  
Artificial Pancreas ◽  
Automatic Data Processing ◽  
Medium Term ◽  
Short Term ◽  
Automatic Data ◽  
Automatic Data Analysis

Background: The use of telemedicine for diabetes care has evolved over time, proving that it contributes to patient self-monitoring, improves glycemic control, and provides analysis tools for decision support. The timely development of a safe and robust ambulatory artificial pancreas should rely on a telemedicine architecture complemented with automatic data analysis tools able to manage all the possible high-risk situations and to guarantee the patient's safety. Methods: The Intelligent Control Assistant system (INCA) telemedical artificial pancreas architecture is based on a mobile personal assistant integrated into a telemedicine system. The INCA supports four control strategies and implements an automatic data processing system for risk management (ADP-RM) providing short-term and medium-term risk analyses. The system validation comprises data from 10 type 1 pump-treated diabetic patients who participated in two randomized crossover studies, and it also includes in silico simulation and retrospective data analysis. Results: The ADP-RM short-term risk analysis prevents hypoglycemic events by interrupting insulin infusion. The pump interruption has been implemented in silico and tested for a closed-loop simulation over 30 hours. For medium-term risk management, analysis of capillary blood glucose notified the physician with a total of 62 alarms during a clinical experiment (56% for hyperglycemic events). The ADP-RM system is able to filter anomalous continuous glucose records and to detect abnormal administration of insulin doses with the pump. Conclusions: Automatic data analysis procedures have been tested as an essential tool to achieve a safe ambulatory telemedical artificial pancreas, showing their ability to manage short-term and medium-term risk situations.

A preliminary archaeological survey of Camp Wellman at Virgohamn, Danskøya, Svalbard

Polar Record ◽  
1994 ◽  
Vol 30 (175) ◽  
pp. 265-276 ◽  
Author(s):  
P.J. Capelotti
Keyword(s):  
North Pole ◽  
The Arctic ◽  
Archaeological Survey ◽  
Svalbard Archipelago ◽  
The North ◽  
Base Camp ◽  
The Impact ◽  
First Time

ABSTRACTBetween 1894 and 1909, Walter Wellman (1858–1934), a Chicago-based journalist and explorer, organized and led five expeditions to reach the North Pole. Wellman launched his most ambitious undertaking in 1906, constructing an extensive base camp complete with an airship hangar on the shoreline of Virgohamn, a small harbor on Danskøya in the Svalbard archipelago. In 1907 and 1909, Wellman's two flights in the dirigible airship America marked the first time a motorized airship had flown in the Arctic. In the summer of 1993, the author surveyed and mapped the extent of the remains of Wellman's camp to discover and document any surviving wreckage of America, and to observe the impact of tourist traffic on the site. This paper describes the 1993 survey of Wellman's base camp at Virgohamn and offers suggestions for its preservation.

Data Screening Methods – Application to Differential Diagnosis in Pancreatic Pathology from Radiological Signs

1978 ◽  
Vol 17 (01) ◽  
pp. 36-40 ◽  
Author(s):  
J.-P. Durbec ◽  
Jaqueline Cornée ◽  
P. Berthezene
Keyword(s):  
Differential Diagnosis ◽  
Mutual Information ◽  
Data Processing ◽  
Screening Methods ◽  
Automatic Data ◽  
Chronic Calcifying Pancreatitis ◽  
Number Of Patients ◽  
Calcifying Pancreatitis ◽  
Pancreatic Pathology ◽  
Data Screening

The practice of systematic examinations in hospitals and the increasing development of automatic data processing permits the storing of a great deal of information about a large number of patients belonging to different diagnosis groups.To predict or to characterize these diagnosis groups some descriptors are particularly useful, others carry no information. Data screening based on the properties of mutual information and on the log cross products ratios in contingency tables is developed. The most useful descriptors are selected. For each one the characterized groups are specified.This approach has been performed on a set of binary (presence—absence) radiological variables. Four diagnoses groups are concerned: cancer of pancreas, chronic calcifying pancreatitis, non-calcifying pancreatitis and probable pancreatitis. Only twenty of the three hundred and forty initial radiological variables are selected. The presence of each corresponding sign is associated with one or more diagnosis groups.

A Well-Ordered Thing

2018 ◽  
Author(s):  
Michael D. Gordin
Keyword(s):  
Nineteenth Century ◽  
History Of Science ◽  
Periodic Table ◽  
The Arctic ◽  
Classic Work ◽  
Hot Air ◽  
History Of ◽  
First Time

Dmitrii Mendeleev (1834–1907) is a name we recognize, but perhaps only as the creator of the periodic table of elements. Generally, little else has been known about him. This book is an authoritative biography of Mendeleev that draws a multifaceted portrait of his life for the first time. As the book reveals, Mendeleev was not only a luminary in the history of science, he was also an astonishingly wide-ranging political and cultural figure. From his attack on Spiritualism to his failed voyage to the Arctic and his near-mythical hot-air balloon trip, this is the story of an extraordinary maverick. The ideals that shaped his work outside science also led Mendeleev to order the elements and, eventually, to engineer one of the most fascinating scientific developments of the nineteenth century. This book is a classic work that tells the story of one of the world's most important minds.

Professional pathology in the production of aluminum in the Kola Arctic

2020 ◽  
pp. 767-767
Author(s):  
S. A. Syurin ◽  
S. A. Gorbanev
Keyword(s):  
Working Conditions ◽  
Occupational Diseases ◽  
Scientific Explanation ◽  
Marked Decrease ◽  
The Arctic ◽  
Aluminium Production ◽  
First Time

In 2007-2017, 22 occupational diseases were diagnosed for the first time in 18 workers engaged in aluminium production in the Arctic. A marked decrease in occupational morbidity in 2010-2017 was found, which was not associated with changes in working conditions and therefore requires an appropriate scientific explanation.

scholarly journals Svalbamides A and B, Pyrrolidinone-Bearing Lipodipeptides from Arctic Paenibacillus sp.

Marine Drugs ◽  
2021 ◽  
Vol 19 (4) ◽  
pp. 229
Author(s):  
Young Eun Du ◽  
Eun Seo Bae ◽  
Yeonjung Lim ◽  
Jang-Cheon Cho ◽  
Sang-Jip Nam ◽  
...  
Keyword(s):  
Reductase Activity ◽  
Quinone Reductase ◽  
The Arctic ◽  
Amino Acid Residues ◽  
Chemopreventive Agents ◽  
Svalbard Archipelago ◽  
Paenibacillus Sp ◽  
Combinational Analysis ◽  
Culture Extract ◽  
The Absolute

Two new secondary metabolites, svalbamides A (1) and B (2), were isolated from a culture extract of Paenibacillus sp. SVB7 that was isolated from surface sediment from a core (HH17-1085) taken in the Svalbard archipelago in the Arctic Ocean. The combinational analysis of HR-MS and NMR spectroscopic data revealed the structures of 1 and 2 as being lipopeptides bearing 3-amino-2-pyrrolidinone, d-valine, and 3-hydroxy-8-methyldecanoic acid. The absolute configurations of the amino acid residues in svalbamides A and B were determined using the advanced Marfey’s method, in which the hydrolysates of 1 and 2 were derivatized with l- and d- forms of 1-fluoro-2,4-dinitrophenyl-5-alanine amide (FDAA). The absolute configurations of 1 and 2 were completely assigned by deducing the stereochemistry of 3-hydroxy-8-methyldecanoic acid based on DP4 calculations. Svalbamides A and B induced quinone reductase activity in Hepa1c1c7 murine hepatoma cells, indicating that they represent chemotypes with a potential for functioning as chemopreventive agents.

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