GPR-derived facies architectures: a new perspective on mapping pyroclastic flow deposits

Cassidy, N.; Calder, Eliza S.; Pavez, A.; Wooller, Luke

doi:10.1144/iavcel002.10

Cited by 9 publications

(14 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the past such an understanding has mostly depended upon studies of the field deposit sequences (Cas and Wright, 1987;Sigurdsson et al, 1987;Druitt, 1998;Branney and Kokelaar, 2002;Cassidy et al, 2009). These studies allowed inferences on the main mechanisms of generation, propagation, and mobility of the currents that provided estimates of some variables relevant for hazard assessment, such as height of fall (H) and runout (L), flow volume, deposit area, inundation area, and characteristic grain size distribution (e.g., Hayashi and Self, 1992;Yamamoto et al, 1993;Widiwijayanti et al, 2008).…”

Section: Pdc Generation and Dynamicsmentioning

confidence: 99%

Pyroclastic Density Current Hazards and Risk

Neri

Ongaro

Voight

et al. 2015

Volcanic Hazards, Risks and Disasters

View full text Add to dashboard Cite

Section: Pdc Generation and Dynamicsmentioning

confidence: 99%

Pyroclastic Density Current Hazards and Risk

Neri

Ongaro

Voight

et al. 2015

Volcanic Hazards, Risks and Disasters

View full text Add to dashboard Cite

“…The collapse of the eruption column generated pyroclastic pumice flows that extended up to 8.5 km NW and 4 km SE of the summit (Smithsonian Institution, 1993;Sparks et al, 1997;Calder et al, 2000;Cassidy et al, 2009). The pumice flows spilled over the northern and southern flanks: to the north, the flows were channelised in short sections of their path and spread over ancient lava flows which were highly eroded by their passage Calder et al, 2000); to the south, most of the flows appear to have followed a gully (label A in Fig.…”

Section: Description Of the Region Studiedmentioning

confidence: 99%

“…There were a number of explosive events which generated pyroclastic flows, particularly on the 19th April (Smithsonian Institution, 1993), and see Table 1 of Cassidy et al (2009). This resulted in a deposit which is composed of the products of several different flow units Calder et al, 2000;Cassidy et al, 2009). This deposit is particularly well preserved because the Atacama Basin receives very little precipitation that might alter or obscure it.…”

Section: Description Of the Region Studiedmentioning

confidence: 99%

LiDAR derived morphology of the 1993 Lascar pyroclastic flow deposits, and implication for flow dynamics and rheology

Jessop

Kelfoun

Labazuy

et al. 2012

Journal of Volcanology and Geothermal Research

View full text Add to dashboard Cite

“…This descriptive approach has been particularly successful in describing the architecture of pyroclastic density current deposits from Lascar Volcano, Chile (Cassidy et al 2009a) and, in a preliminary study, the 2006 Merapi BAF deposits in the Gendol valley (Cassidy et al 2009b;cf. Gomez et al 2008cf.…”

Section: The 2006 Eruption Of Merapimentioning

confidence: 99%

Overbank block-and-ash flow deposits and the impact of valley-derived, unconfined flows on populated areas at Merapi volcano, Java, Indonesia

et al. 2011

View full text Add to dashboard Cite

Merapi, an andesitic volcanic complex in Central Java, is one of the most frequently erupting volcanoes in Indonesia and poses a permanent threat to the surrounding population of over 1 million people. With frequently recurring volcanic activity, the sixty or so reported eruptions since the mid-1500s have caused *7,000 fatalities and destroyed numerous villages in the region. In June 2006, an eruption affected the densely populated area on the volcano's southern and south-eastern flanks for the first time in almost a century. The resultant block-and-ash flows (BAFs) travelled down an incised river valley (Kali Gendol) to a distance of 7 km from the source, breaking out of the main channel at four main locations. Unconfined (overbank) BAFs were generated, which covered the interfluve regions on either side of the main valley and buried buildings and other infrastructure features in the village of Kaliadem, situated on the western bank of the Gendol valley *5 km from the summit of Merapi. Using traditional volcanological field-based methods and non-invasive, high-resolution ground-penetrating radar techniques, the morphology and internal architecture of these overbank deposits were studied in detail in order to evaluate the destructive impact of these flows in a local context. The results show that complex, local-scale variations in flow dynamics and deposit architectures are apparent and that BAFs are capable of transporting significant numbers of large blocks ([1-2 m) out of the valley confines. We propose a conceptual model for the escape of these channelised BAFs onto the interfluvial terrace at Kaliadem and show, through a stratigraphic analysis of the pyroclastic successions underlying the village and adjacent areas on the volcano's southern flank, that the area has been affected repeatedly by overbank BAFs and explosive eruptions over the past few 100 years (and more).

show abstract

GPR-derived facies architectures: a new perspective on mapping pyroclastic flow deposits

Cited by 9 publications

References 0 publications

Pyroclastic Density Current Hazards and Risk

Pyroclastic Density Current Hazards and Risk

LiDAR derived morphology of the 1993 Lascar pyroclastic flow deposits, and implication for flow dynamics and rheology

Overbank block-and-ash flow deposits and the impact of valley-derived, unconfined flows on populated areas at Merapi volcano, Java, Indonesia

Contact Info

Product

Resources

About