New method for quantitative assessment of airway calibre using a stereovision fibreoptic bronchoscope

Abstract. Many works have shown that the relation between rock fall frequency and volume is well fitted by a power law. Based on this relation, a new method is presented which allows estimating the fall frequency and probability for a wall section in a homogenous cliff, considering all possible rock fall volumes. The hazard for an element located at the foot of the cliff, with a minimal energy, is also estimated. The method has been applied to an itinerary, for which the human risk has also been estimated. Rock fall inventories featuring the location, date, and volume of the falls and the dimensions of the fallen compartments (width, length, and thickness) are needed for better estimating of hazard and risk.

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128: Accuracy of a new method for semi-quantitative assessment of right ventricular ejection fraction by cardiac MRI: right ventricle fractional diameter change

Archives of Cardiovascular Diseases Supplements ◽

10.1016/s1878-6480(13)71058-9 ◽

2013 ◽

Vol 5 (1) ◽

pp. 42

Author(s):

Nicolas Rebotier ◽

Emmanuelle Vermes ◽

Marie Piquemal ◽

Julien Pucheux ◽

Anne Delhommais ◽

...

Keyword(s):

Ejection Fraction ◽

Right Ventricle ◽

Right Ventricular ◽

Cardiac Mri ◽

Quantitative Assessment ◽

Right Ventricular Ejection Fraction ◽

Ventricular Ejection ◽

New Method ◽

Ventricular Ejection Fraction ◽

Diameter Change

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Enhanced calving rates related to meltwater plume occurrence at Eqip Sermia, Greenland

10.5194/egusphere-egu21-126 ◽

2021 ◽

Author(s):

Adrien Wehrlé ◽

Martin P Lüthi ◽

Andrea Walter ◽

Guillaume Jouvet ◽

Andreas Vieli

Keyword(s):

Deep Water ◽

Quantitative Assessment ◽

Power Index ◽

Greenland Ice Sheet ◽

Wave Activity ◽

New Method ◽

Wave Power ◽

Dynamic Mass ◽

Glacier Terminus ◽

Minute Interval

Glacier calving plays a key role in the recently observed dynamic mass loss of the Greenland ice sheet. Calving waves, generated by the sudden detachment of ice from the glacier terminus, can reach tens of meters of height and have devastating effects upon impact on surrounding shores. In this study, we describe a new method for the detection of source location and timing of calving waves, and the analysis of their magnitude and spreading properties using a terrestrial radar interferometer (TRI). This method was applied to 11,500 minute-interval TRI acquisitions from Eqip Sermia, Greenland. More than 2,000 calving waves were detected within seven days. Quantitative assessment with a Wave Power Index (WPI) showed spatially distinctive patterns: the sector of the calving front ending in deep water shows a higher wave activity (+49%) with higher cumulative WPI (+34%) than the shallow sector. In combination with a detection of meltwater plume locations, we highlighted a 2.3 times higher occurrence of visible meltwater plumes in the deep sector than the shallow one. We found both the cumulated WPI and the number of waves to increase by more than 80% in the presence of a meltwater plume in the deep sector while only by 30% in the shallow sector. &#160;We therefore explain the higher calving activity in the deep sector to be&#160; strongly related to a combination of higher occurrence of meltwater plumes&#160; and more efficient calving enhancement linked to better connections&#160; to deep warm waters.

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