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Table of Contents
Tephra dispersal and eruption dynamics of wet and dry phases of the 1875 eruption of Askja Volcano, Iceland
Abstract
Introduction
Location and geological setting
〰㈰〸〰琰と〰†㈳〰‰〲〰㤰ぴ〰栰〠〰䴰ち〰爰っ〰栰〠〰〸〰㜰〵〰‰づ〰爰ふ〰瀰ぴ〰椰ぶ〰攰〠〰猰づ〰焰ふ〰攰の〰挰づ
〰㈰〸〰琰と〰†㈳〰‰〲〰㤰ぴ〰栰〠〰䴰ち〰爰っ〰栰〠〰〸〰㜰〵〰‰つ〰攰ば〰漰び〰椰ぴ〰
Initial Ash (Fall)
Unit B (Fall)
Unit C1 (Fall)
Unit C2 (pyroclastic surge)
Unit D (Fall)
Distribution and thickness of the depositional units
Integrating the historical and modern thickness data
Subplinian unit B
Phreatoplinian unit C
Plinian unit D
Clast size distribution
Subplinian unit B
Phreatoplinian unit C
Plinian unit D
Eruptive parameters
Volume calculations
Exponential thinning
Power-law thinning
〰唰の〰挰づ〰爰ぴ〰愰ど〰渰ぴ〰椰づ〰猰〠〰椰の〰‰て〰愰ひ〰ⴰつ〰椰び〰琰ち〰氰〠″〰ど〰猰は〰瀰ち〰挰と〰猠㌱
Vent position
Mass discharge rates
Comparison with other eruptions
Column height
Discussion
Calculating tephra-fall volumes based on power-law and exponential thinning
The problem of incomplete data sets
Summary
Conclusions
References