Results 21 to 30 of about 9,762 (210)

Analysis of the 2020 Taal Volcano tephra fall deposits from crowdsourced information and field data. [PDF]

Bull Volcanol, 2022
Balangue-Tarriela MIR, Lagmay AMF, Sarmiento DM, Vasquez J, Baldago MC, Ybañez R, Ybañez AA, Trinidad JR, Thivet S, Gurioli L, de Vries BVW, Aurelio M, Rafael DJ, Bermas A, Escudero JA.   +14 more
europepmc   +2 more sources

How rainfall influences tephra fall loading — an experimental approach [PDF]

Bulletin of Volcanology, 2021
AbstractThe load a tephra fall deposit applies to an underlying surface is a key factor controlling its potential to damage a wide range of assets including buildings, trees, crops and powerlines. Though it has long been recognised that loading can increase when deposits absorb rainfall, few efforts have been made to quantify likely load increases ...
George T. Williams, Susanna F. Jenkins, Daniel W. J. Lee, Shi Jun Wee   +3 more
openaire   +2 more sources

Real-Time Tephra Detection and Dispersal Forecasting by a Ground-Based Weather Radar

Remote Sensing, 2021
Tephra plumes can cause a significant hazard for surrounding towns, infrastructure, and air traffic. The current work presents the use of a small and compact X-band multi-parameter (X-MP) radar for the remote tephra detection and tracking of two eruptive
Magfira Syarifuddin, Susanna F. Jenkins, Ratih Indri Hapsari, Qingyuan Yang, Benoit Taisne, Andika Bayu Aji, Nurnaning Aisyah, Hanggar Ganara Mawandha, Djoko Legono   +8 more
doaj   +1 more source

Remotely assessing tephra fall building damage and vulnerability: Kelud Volcano, Indonesia [PDF]

Journal of Applied Volcanology, 2020
AbstractTephra from large explosive eruptions can cause damage to buildings over wide geographical areas, creating a variety of issues for post-eruption recovery. This means that evaluating the extent and nature of likely building damage from future eruptions is an important aspect of volcanic risk assessment.
George T. Williams, Susanna F. Jenkins, Sébastien Biass, Haryo Edi Wibowo, Agung Harijoko   +4 more
openaire   +2 more sources

Estimating tephra fall volume from point-referenced thickness measurements

Geophysical Journal International, 2022
SUMMARYWe describe an algorithm for producing an approximate 95 per cent confidence interval (CI) for the bulk volume of tephra fall deposits, based on point-referenced tephra thickness measurements, and expert judgement. Applied to the Aso-4 eruption, our algorithm gives a 95 per cent CI of $[220\, \mathrm{km^3}, 370\, \mathrm{km^3}]$.
J C Rougier, R S J Sparks, W P Aspinall, S H Mahony   +3 more
openaire   +1 more source

Re-identification of c. 15 700 cal yr BP tephra bed at Kaipo Bog, eastern North Island: implications for dispersal of Rotorua and Puketarata tephra beds. [PDF]

, 2003
A 10 mm thick, c. 15 700 calendar yr BP (c. 13 100 14C yr BP) rhyolitic tephra bed in the well-studied montane Kaipo Bog sequence of eastern North Island was previously correlated with Maroa-derived Puketarata Tephra.
Froggatt P. C., Kilgour G. N., Lloyd E. F., Lowe D. J., Lowe D. J., Nairn I. A., Pullar W. A., Righter K., Stuiver M., Topping W. W., Wilson C. J. N.   +10 more
core   +2 more sources

Quantifying uncertainties in the measurement of tephra fall thickness [PDF]

Journal of Applied Volcanology, 2013
The uncertainties associated with tephra thickness measurements are calculated and implications for volume estimates are presented. Statistical methods are used to analyse the large dataset of Walker and Croasdale J Geol Soc 127:17-55, 1971 of the Fogo A plinian deposit, Sao Miguel, Azores.
Engwell, S. L., Sparks, R. S.J., Aspinall, W. P.   +2 more
openaire   +2 more sources

Morphology and formation of glassy volcanic ash from the August 12-15, 1991 eruption of Hudson Volcano, Chile

Latin American Journal of Sedimentology and Basin Analysis, 2021
The 1991 explosive eruption of Hudson volcano in Chile ejected about 2.7 km3 (DRE) of basalt and trachyandesite magma as tephra fall. A majority of the fallout occurred from an eruption during the period August 12-15, 1991, producing an extensive ...
Roberto A. Scasso, Steven Carey
doaj   +2 more sources

Hiroshi Machida −respected tephrochronologist, teacher, leader [PDF]

, 2011
Professor Emeritus Hiroshi Machida (Hiroshi hereafter) is the leading tephrochronologist of his generation in Japan. Perhaps more than any other geoscientist from Japan, Hiroshi carried the insights and advances of tephra studies and their application in
Lowe, David J., Moriwaki, Hiroshi, Suzuki, Takehiko   +2 more
core   +2 more sources

Sakurajima-Satsuma (Sz-S) and Noike-Yumugi (N-Ym) tephras: new tephrochronological marker beds for the last deglaciation, southern Kyushu, Japan [PDF]

, 2011
Two prominent tephras, Sakurajima-Satsuma (Sz-S) erupted from Sakurajima volcano and Noike-Yumugi (N-Ym) erupted from Kuchierabujima Island, provide new key marker beds for dating and synchronizing palaeoenvironmental and archaeological records in the ...
Ikehara, Minoru, Lowe, David J., Machida, Hiroshi, Moriwaki, Hiroshi, Murata, Masanori, Suzuki, Takehiko   +5 more
core   +2 more sources