scholarly journals Is There an Influence of the Pole Tide on Volcanism? Insights From Mount Etna Recent Activity

2019 ◽  
Vol 46 (23) ◽  
pp. 13730-13736 ◽  
Author(s):  
S. Lambert ◽  
G. Sottili
Keyword(s):  
Mount Etna ◽  
Pole Tide ◽  
Recent Activity

scholarly journals Lower Ionospheric Turbulence Variations During the Recent Activity of Etna’s Volcano, Sicily, in December 2018

2019 ◽  
Vol 55 (1) ◽  
pp. 19
Author(s):  
Michael E. Contadakis ◽  
Demeter Arabelos ◽  
Emmanuel Scordilis
Keyword(s):  
Gravity Waves ◽  
High Frequency ◽  
Mount Etna ◽  
Eastern Coast ◽  
Earthquake Activity ◽  
Etna Volcano ◽  
Ionospheric Turbulence ◽  
Frequency Limit ◽  
Recent Activity ◽  
Nearby City

In this paper, we present an investigation on the ionospheric turbulence from TEC observations before and during the recent activity of Etna’s Volcano. Mount Etna is located close to the eastern coast of Sicily. The last eruption of Etna volcano took place on 24 December 2018 while two days later (26 December, 02:19 UTC) an earthquake of M=5.0 occurred ~15 km to the ESE of the volcano, causing damage to the nearby city of Catania. The results of our investigation, on the occasion of the Etna’s Volcanic activity, indicate that the high-frequency limit fo  of the ionospheric turbulence band content, is increasing with time to the volcano eruption while, at the same time, fo isdecreasing with distance from the volcano. We conclude that the LAIC mechanism through acoustic or gravity waves could explain this phenomenology, as it has happened in cases of earthquake activity. Our observations indicate that the effect of volcanic eruption on the band content of the ionospheric turbulence is insignificant at distances greater than 1000km (at the most), a fact that we must consider in our research on Ionospheric turbulence in relation to earthquake precursors research.

Temps du deuil, temps du récit. Le renversement du temps dans La première année de Jean-Michel Espitallier

2020 ◽  
pp. 71-82
Author(s):  
Despina Jderu
Keyword(s):  
Narrative Structure ◽  
Literary Discourse ◽  
Prominent Feature ◽  
Literary Space ◽  
French Writer ◽  
Recent Activity ◽  
Nature Of Time ◽  
Denial Of Death ◽  
The Relationship

This paper aims to analyze the nature of time as identified in the narrative structure built by the French writer, Jean-Michel Espitallier, in his novel, La première année. We are considering how the author perceives the relationship between time and mourning through the ability of literary space to provide a compensatory universe. We are looking to observe recent activity in French mourning literature through the lens of this particularly novel, namely its perspective on processing mourning and trauma. This paper also highlights a prominent feature of French mourning literature: how the narrator’s literary discourse is used to fight against the passing of time. The fight against time is an implicit denial of death and mourning.

Lovotics

2017 ◽  
Author(s):  
Adrian David Cheok ◽  
Kasun Karunanayaka ◽  
Emma Yann Zhang
Keyword(s):  
Science Fiction ◽  
Intimate Relationships ◽  
Intelligent Systems ◽  
Humanoid Robots ◽  
Legal Issues ◽  
Sex Communication ◽  
Ethical And Legal Issues ◽  
Recent Activity ◽  
Academic Area ◽  
Robot Companions

Intimate relationships, such as love and sex, between human and machines, especially robots, has been one of the themes of science fiction. However, this topic has never been treated in the academic area until recently. It was first raised and discussed by David Levy in his book Love and Sex with Robotics (2007). Since then, researchers have come up with many implementations of robot companions, like sex robots, emotional robots, humanoid robots, and artificial intelligent systems that can simulate human emotions. This chapter presents a summary of significant recent activity in this field, predicts how the field is likely to develop, and discusses ethical and legal issues. We also discuss our research in physical devices for human–robot love and sex communication.

scholarly journals On the use of plume models to estimate the flux in volcanic gas plumes

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Julia Woitischek ◽  
Nicola Mingotti ◽  
Marie Edmonds ◽  
Andrew W. Woods
Keyword(s):  
Electrochemical Sensors ◽  
Measurement Techniques ◽  
Flux Measurement ◽  
Hydrothermal Systems ◽  
Mount Etna ◽  
Volcanic Gas ◽  
Gas Flux ◽  
Convective Structures ◽  
Video Images ◽  
Villarrica Volcano

AbstractMany of the standard volcanic gas flux measurement approaches involve absorption spectroscopy in combination with wind speed measurements. Here, we present a new method using video images of volcanic plumes to measure the speed of convective structures combined with classical plume theory to estimate volcanic fluxes. We apply the method to a nearly vertical gas plume at Villarrica Volcano, Chile, and a wind-blown gas plume at Mount Etna, Italy. Our estimates of the gas fluxes are consistent in magnitude with previous reported fluxes obtained by spectroscopy and electrochemical sensors for these volcanoes. Compared to conventional gas flux measurement techniques focusing on SO2, our new model also has the potential to be used for sulfur-poor plumes in hydrothermal systems because it estimates the H2O flux.

scholarly journals A perspective on corrosion of multi-principal element alloys

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
N. Birbilis ◽  
S. Choudhary ◽  
J. R. Scully ◽  
M. L. Taheri
Keyword(s):  
Physical Properties ◽  
High Resistance ◽  
Metallic Alloys ◽  
Harsh Environments ◽  
Principal Element ◽  
Corrosion Resistant ◽  
Advanced Technologies ◽  
Recent Activity ◽  
Engineered Systems ◽  
Corrosion And Oxidation

AbstractMetallic alloys are critical to essentially all advanced technologies and engineered systems. The well-documented impact of corrosion (and oxidation) of alloys, remains a significant industrial and economic challenge, year on year. Recent activity in the field of metallurgy has revealed a class of metallic alloys, termed multi principal element alloys (MPEAs) that present unique physical properties. Such MPEAs have in many instances also demonstrated a high resistance to corrosion – which may permit the broader use of MPEAs as corrosion resistant alloys (CRAs) in harsh environments. Herein, the progress in MPEA research to date, along with prospects and challenges, are concisely reviewed—with potential future lines of research elaborated.

Revisiting Security Council action on terrorism: New threats; (a lot of) new law; same old problems?

2021 ◽  
pp. 1-30
Author(s):  
David McKeever
Keyword(s):  
International Law ◽  
Security Council ◽  
Counter Terrorism ◽  
Un Security Council ◽  
New Type ◽  
Recent Activity ◽  
Legislative Activity ◽  
Recent Action ◽  
Organizing Principles ◽  
Law Making

Abstract The devastating events of 9/11 triggered the adoption of Resolution 1373 (2001) by the UN Security Council, a contentious development which was much debated and was widely seen as presaging a new type of activity by the Security Council – legislating for all UN member states. And yet, in the counter-terrorism sphere at least, the Council’s legislative activity in the years following 9/11 was relatively modest. Both quantitatively and qualitatively, that activity has been far exceeded by the Council’s response to the emergence of ISIL in 2014. This more recent activity is of interest beyond the confines of counter-terrorism, but has received far less scrutiny to date. This article will remedy this gap, revisiting, in light of the recent activity, the relative merits and disadvantages of making counter-terrorism law through Security Council resolutions. It makes two main contentions. The first is that – due to some factors which were anticipated in the early 2000s and many which were not – Security Council resolutions on terrorism constitute a distinctive category of international law-making and pose serious challenges for the application of organizing principles and processes of general international law. The second is that, for these reasons as well as doubts as to the necessity and efficacy of recent action, making counter-terrorism law through Security Council resolutions should be the exception rather than the norm.

Chemical variation of clinopyroxene phenocrysts from the trachybasaltic lavas of Mount Etna, Sicily

1980 ◽  
Vol 43 (330) ◽  
pp. 765-770 ◽  
Author(s):  
A. M. Duncan ◽  
R. M. F. Preston
Keyword(s):  
Trace Element ◽  
Mount Etna ◽  
Chemical Variation ◽  
Etna Volcano ◽  
Trace Element Chemistry ◽  
Sector Zoning ◽  
Steady Decrease ◽  
Element Chemistry

SummaryThe chemical variation of clinopyroxene phenocrysts from the trachybasaltic lavas of Etna volcano is described. The phenocrysts show a limited, but distinct trend in chemical variation from calcic-augite in the hawaiites to augite in the benmoreites. The trend of this variation is unusual, being one of Mg-enrichment with differentiation of the magma. Ca shows a steady decrease in the clinopyroxenes from the hawaiites to the benmoreites. Na, however, shows little chemical variation in the pyroxenes. The trace element chemistry is briefly examined. The clinopyroxenes show well-developed oscillatory and sector zoning. The basal {11} sectors are enriched in Si and Mg and depleted in Ti, Al, and Fe relative to the {100}, {110}, and {010} prism sectors.

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