scholarly journals Deformations and Morphology Changes Associated with the 2016–2017 Eruption Sequence at Bezymianny Volcano, Kamchatka

2019 ◽  
Vol 11 (11) ◽  
pp. 1278 ◽  
Author(s):  
René Mania ◽  
Thomas R. Walter ◽  
Marina Belousova ◽  
Alexander Belousov ◽  
Sergey L. Senyukov
Keyword(s):  
Source Region ◽  
Integrated Approach ◽  
Close Monitoring ◽  
Density Currents ◽  
Bezymianny Volcano ◽  
Magma Supply ◽  
Data Resolution ◽  
Magmatic Intrusions ◽  
Precursory Activity ◽  
Magma Supply Rate

Lava domes grow by extrusions and intrusions of viscous magma often initiating from a central volcanic vent, and they are frequently defining the source region of hazardous explosive eruptions and pyroclastic density currents. Thus, close monitoring of dome building processes is crucial, but often limited to low data resolution, hazardous access, and poor visibility. Here, we investigated the 2016–2017 eruptive sequence of the dome building Bezymianny volcano, Kamchatka, with spot-mode TerraSAR-X acquisitions, and complement the analysis with webcam imagery and seismic data. Our results reveal clear morphometric changes preceding eruptions that are associated with intrusions and extrusions. Pixel offset measurements show >7 months of precursory plug extrusion, being locally defined and exceeding 30 m of deformation, chiefly without detected seismicity. After a short explosion, three months of lava dome evolution were characterised by extrusions and intrusion. Our data suggest that the growth mechanisms were significantly governed by magma supply rate and shallow upper conduit solidification that deflected magmatic intrusions into the uppermost parts of the dome. The integrated approach contributes significantly to a better understanding of precursory activity and complex growth interactions at dome building volcanoes, and shows that intrusive and extrusive growth is acting in chorus at Bezymianny volcano.

Variations in magma supply rate at Kilauea Volcano, Hawaii

1993 ◽  
Vol 98 (B12) ◽  
pp. 22255-22268 ◽  
Author(s):  
John J. Dvorak ◽  
Daniel Dzurisin
Keyword(s):  
Kilauea Volcano ◽  
Supply Rate ◽  
Magma Supply ◽  
Kīlauea Volcano ◽  
Magma Supply Rate

scholarly journals Treating COVID-19 in the nursing home setting: an integrated approach for a complex and susceptible cohort

2021 ◽  
Vol 2021 (11-12) ◽  
Author(s):  
Warren Connolly ◽  
Jonathan O’Keeffe ◽  
Cathal ÓBroin ◽  
Rosa Mc Namara ◽  
Jonathan Dean ◽  
...  
Keyword(s):  
Immune Response ◽  
Nursing Home ◽  
Nursing Home Residents ◽  
Integrated Approach ◽  
Close Monitoring ◽  
Home Setting ◽  
Outreach Service ◽  
Nursing Home Setting ◽  
Igg Level ◽  
Susceptible Group

ABSTRACT Our patient, a nursing home resident, was reviewed by our frailty outreach service in November 2020. She initially was diagnosed with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in September 2020 during an outbreak in her nursing home. On this occasion, she again tested positive for SARS-CoV-2. Our case report describes the resident’s poor immune response indicated by a low IgG level after her initial COVID infection as well as reinfection with a ‘non-variant’ SARS-CoV-2 lineage (B.1.177). The case describes the importance of integration of community and secondary care. The nursing home received close monitoring and nurse supervision for the detection of potential deterioration of the patient. Exit-seeking behaviour by nursing home residents was limited effectively. The issues of low immune response to COVID-19 in older people and the emergence of variants of concern will continue to pose a threat to this susceptible group.

scholarly journals Chronology and impact of the 2011 Puyehue-Cordón Caulle eruption, Chile

2015 ◽  
Vol 3 (9) ◽  
pp. 5383-5452 ◽  
Author(s):  
M. Elissondo ◽  
V. Baumann ◽  
C. Bonadonna ◽  
M. Pistolesi ◽  
R. Cioni ◽  
...  
Keyword(s):  
Urban Areas ◽  
Density Currents ◽  
Economic Sectors ◽  
Regional Effects ◽  
Volcanic Processes ◽  
Impact Data ◽  
Road Closure ◽  
Precursory Activity ◽  
The Impact ◽  
Clear Relation

Abstract. We present a detailed chronological reconstruction of the 2011 eruption of Puyehue-Cordón Caulle volcano (Chile) based on information derived from newspapers, scientific reports and satellite images. Chronology of associated volcanic processes and their local and regional effects (i.e. precursory activity, tephra fallout, lahars, pyroclastic density currents, lava flows) are also presented. The eruption had a severe impact on the ecosystem and on various economic sectors, including aviation, tourism, agriculture, and fishing industry. Urban areas and critical infrastructures, such as airports, hospitals and roads, were also impacted. The concentration of PM10 (Particulate Matter ≤ 10 μm) was measured during and after the eruption, showing that maximum safety threshold levels of daily and annual exposures were surpassed in several occasions. Probabilistic analysis of atmospheric and eruptive conditions have shown that the main direction of dispersal is directly towards east of the volcano and that the climactic phase of the eruption, dispersed toward south-east, has a probability of occurrence within 1 %. The management of the crisis, including evacuation of people, is discussed, as well as the comparison with the impact associated with other recent eruptions located in similar areas and having similar characteristics (i.e. Quizapu, Hudson, and Chaitén volcanoes). This comparison shows that the regions downwind and very close to the erupting volcanoes suffered very similar problems, without a clear relation with the intensity of the eruption (e.g. health problems, damage to vegetation, death of animals, roof collapse, air traffic disruptions, road closure, lahars and flooding). This suggests that a detailed collection of impact data can be largely beneficial for the development of plans for the management of an eruptive crisis and the mitigation of associated risk of the Andean region.

scholarly journals Chronology and impact of the 2011 Cordón Caulle eruption, Chile

2016 ◽  
Vol 16 (3) ◽  
pp. 675-704 ◽  
Author(s):  
Manuela Elissondo ◽  
Valérie Baumann ◽  
Costanza Bonadonna ◽  
Marco Pistolesi ◽  
Raffaello Cioni ◽  
...  
Keyword(s):  
Urban Areas ◽  
Density Currents ◽  
Economic Sectors ◽  
Regional Effects ◽  
Volcanic Processes ◽  
Impact Data ◽  
Road Closure ◽  
Precursory Activity ◽  
The Impact ◽  
Clear Relation

Abstract. We present a detailed chronological reconstruction of the 2011 eruption of the Cordón Caulle volcano (Chile) based on information derived from newspapers, scientific reports and satellite images. Chronology of associated volcanic processes and their local and regional effects (i.e. precursory activity, tephra fallout, lahars, pyroclastic density currents, lava flows) are also presented. The eruption had a severe impact on the ecosystem and on various economic sectors, including aviation, tourism, agriculture and fishing industry. Urban areas and critical infrastructures, such as airports, hospitals and roads, were also impacted. The concentration of PM10 (particulate matter  ≤  10 µm) was measured during and after the eruption, showing that maximum safety threshold levels of daily and annual exposures were surpassed in several occasions. Probabilistic analyses suggest that this combination of atmospheric and eruptive conditions has a probability of occurrence of about 1 %. The management of the crisis, including evacuation of people, is discussed, as well as the comparison with the impact associated with other recent eruptions located in similar areas and having similar characteristics (i.e. Quizapu, Hudson and Chaitén volcanoes). This comparison shows that the regions downwind and very close to the erupting volcanoes suffered very similar problems, without a clear relation to the intensity of the eruption (e.g. health problems, damage to vegetation, death of animals, roof collapse, air traffic disruptions, road closure, lahars and flooding). This suggests that a detailed collection of impact data can be largely beneficial for the development of plans for the management of an eruptive crisis and the mitigation of associated risk of the Andean region.

After Rofecoxib, CV Risks Warrant Close Monitoring

2006 ◽  
Vol 39 (12) ◽  
pp. 1-19
Author(s):  
MICHELE G. SULLIVAN
Keyword(s):  
Close Monitoring
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