Quantifying Effusion Rates at Active Volcanoes through Integrated Time-Lapse Laser Scanning and Photography. / Browning, John; James, Mike; Slatcher, Neil ; Calvari, Sonia; Ganci, Gaetana.

In: Remote Sensing, Vol. 7, No. 11, 10.11.2015, p. 14967-14987.

Research output: Contribution to journalArticlepeer-review

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Quantifying Effusion Rates at Active Volcanoes through Integrated Time-Lapse Laser Scanning and Photography. / Browning, John; James, Mike; Slatcher, Neil ; Calvari, Sonia; Ganci, Gaetana.

In: Remote Sensing, Vol. 7, No. 11, 10.11.2015, p. 14967-14987.

Research output: Contribution to journalArticlepeer-review

Harvard

Browning, J, James, M, Slatcher, N, Calvari, S & Ganci, G 2015, 'Quantifying Effusion Rates at Active Volcanoes through Integrated Time-Lapse Laser Scanning and Photography', Remote Sensing, vol. 7, no. 11, pp. 14967-14987. https://doi.org/10.3390/rs71114967

APA

Vancouver

Author

Browning, John ; James, Mike ; Slatcher, Neil ; Calvari, Sonia ; Ganci, Gaetana. / Quantifying Effusion Rates at Active Volcanoes through Integrated Time-Lapse Laser Scanning and Photography. In: Remote Sensing. 2015 ; Vol. 7, No. 11. pp. 14967-14987.

BibTeX

@article{89fad114a5834559bf3c0f85a8c047c4,
title = "Quantifying Effusion Rates at Active Volcanoes through Integrated Time-Lapse Laser Scanning and Photography",
abstract = "During volcanic eruptions, measurements of the rate at which magma is erupted underpin hazard assessments. For eruptions dominated by the effusion of lava, estimates are often made using satellite data; here, in a case study at Mount Etna (Sicily), we make the first measurements based on terrestrial laser scanning (TLS), and we also include explosive products. During the study period (17–21 July 2012), regular Strombolian explosions were occurring within the Bocca Nuova crater, producing a ~50 m-high scoria cone and a small lava flow field. TLS surveys over multi-day intervals determined a mean cone growth rate (effusive and explosive products) of ~0.24 m3·s−1. Differences between 0.3-m resolution DEMs acquired at 10-minute intervals captured the evolution of a breakout lava flow lobe advancing at 0.01–0.03 m3·s−1. Partial occlusion within the crater prevented similar measurement of the main flow, but integrating TLS data with time-lapse imagery enabled lava viscosity (7.4 × 105 Pa·s) to be derived from surface velocities and, hence, a flux of 0.11 m3·s−1 to be calculated. Total dense rock equivalent magma discharge estimates are ~0.1–0.2 m3·s−1 over the measurement period and suggest that simultaneous estimates from satellite data are somewhat overestimated. Our results support the use of integrated TLS and time-lapse photography for ground-truthing space-based measurements and highlight the value of interactive image analysis when automated approaches, such as particle image velocimetry (PIV), fail.",
author = "John Browning and Mike James and Neil Slatcher and Sonia Calvari and Gaetana Ganci",
year = "2015",
month = nov,
day = "10",
doi = "10.3390/rs71114967",
language = "English",
volume = "7",
pages = "14967--14987",
journal = "Remote Sensing",
issn = "2072-4292",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "11",

}

RIS

TY - JOUR

T1 - Quantifying Effusion Rates at Active Volcanoes through Integrated Time-Lapse Laser Scanning and Photography

AU - Browning, John

AU - James, Mike

AU - Slatcher, Neil

AU - Calvari, Sonia

AU - Ganci, Gaetana

PY - 2015/11/10

Y1 - 2015/11/10

N2 - During volcanic eruptions, measurements of the rate at which magma is erupted underpin hazard assessments. For eruptions dominated by the effusion of lava, estimates are often made using satellite data; here, in a case study at Mount Etna (Sicily), we make the first measurements based on terrestrial laser scanning (TLS), and we also include explosive products. During the study period (17–21 July 2012), regular Strombolian explosions were occurring within the Bocca Nuova crater, producing a ~50 m-high scoria cone and a small lava flow field. TLS surveys over multi-day intervals determined a mean cone growth rate (effusive and explosive products) of ~0.24 m3·s−1. Differences between 0.3-m resolution DEMs acquired at 10-minute intervals captured the evolution of a breakout lava flow lobe advancing at 0.01–0.03 m3·s−1. Partial occlusion within the crater prevented similar measurement of the main flow, but integrating TLS data with time-lapse imagery enabled lava viscosity (7.4 × 105 Pa·s) to be derived from surface velocities and, hence, a flux of 0.11 m3·s−1 to be calculated. Total dense rock equivalent magma discharge estimates are ~0.1–0.2 m3·s−1 over the measurement period and suggest that simultaneous estimates from satellite data are somewhat overestimated. Our results support the use of integrated TLS and time-lapse photography for ground-truthing space-based measurements and highlight the value of interactive image analysis when automated approaches, such as particle image velocimetry (PIV), fail.

AB - During volcanic eruptions, measurements of the rate at which magma is erupted underpin hazard assessments. For eruptions dominated by the effusion of lava, estimates are often made using satellite data; here, in a case study at Mount Etna (Sicily), we make the first measurements based on terrestrial laser scanning (TLS), and we also include explosive products. During the study period (17–21 July 2012), regular Strombolian explosions were occurring within the Bocca Nuova crater, producing a ~50 m-high scoria cone and a small lava flow field. TLS surveys over multi-day intervals determined a mean cone growth rate (effusive and explosive products) of ~0.24 m3·s−1. Differences between 0.3-m resolution DEMs acquired at 10-minute intervals captured the evolution of a breakout lava flow lobe advancing at 0.01–0.03 m3·s−1. Partial occlusion within the crater prevented similar measurement of the main flow, but integrating TLS data with time-lapse imagery enabled lava viscosity (7.4 × 105 Pa·s) to be derived from surface velocities and, hence, a flux of 0.11 m3·s−1 to be calculated. Total dense rock equivalent magma discharge estimates are ~0.1–0.2 m3·s−1 over the measurement period and suggest that simultaneous estimates from satellite data are somewhat overestimated. Our results support the use of integrated TLS and time-lapse photography for ground-truthing space-based measurements and highlight the value of interactive image analysis when automated approaches, such as particle image velocimetry (PIV), fail.

U2 - 10.3390/rs71114967

DO - 10.3390/rs71114967

M3 - Article

VL - 7

SP - 14967

EP - 14987

JO - Remote Sensing

JF - Remote Sensing

SN - 2072-4292

IS - 11

ER -