TY - JOUR
T1 - Volume, Effusion Rate, and Lava Transport During the 2021 Fagradalsfjall Eruption
T2 - Results From Near Real-Time Photogrammetric Monitoring
AU - Pedersen, Gro B.M.
AU - Belart, Joaquin M.C.
AU - Óskarsson, Birgir Vilhelm
AU - Gudmundsson, Magnús Tumi
AU - Gies, Nils
AU - Högnadóttir, Thórdís
AU - Hjartardóttir, Ásta Rut
AU - Pinel, Virginie
AU - Berthier, Etienne
AU - Dürig, Tobias
AU - Reynolds, Hannah Iona
AU - Hamilton, Christopher W.
AU - Valsson, Guðmundur
AU - Einarsson, Páll
AU - Ben-Yehosua, Daniel
AU - Gunnarsson, Andri
AU - Oddsson, Björn
N1 - Publisher Copyright:
© 2022. The Authors.
PY - 2022/7/16
Y1 - 2022/7/16
N2 - The basaltic effusive eruption at Mt. Fagradalsfjall lasted from 19 March to 18 September 2021, ending a 781-year repose period on Reykjanes Peninsula, Iceland. By late September 2021, 33 near real-time photogrammetric surveys were completed using satellite and airborne images, usually processed within 3–6 hr. The results provide unprecedented temporal data sets of lava volume, thickness, and effusion rate. This enabled rapid assessment of eruption evolution and hazards to populated areas, important infrastructure, and tourist centers. The lava flow field has a mean lava thickness exceeding 30 m, covers 4.8 km2 and has a bulk volume of 150 ± 3 × 106 m3. The March–September mean bulk effusion rate is 9.5 ± 0.2 m3/s, ranging between 1 and 8 m3/s in March–April and increasing to 9–13 m3/s in May–September. This is uncommon for recent Icelandic eruptions, where the highest discharge usually occurs in the opening phase.
AB - The basaltic effusive eruption at Mt. Fagradalsfjall lasted from 19 March to 18 September 2021, ending a 781-year repose period on Reykjanes Peninsula, Iceland. By late September 2021, 33 near real-time photogrammetric surveys were completed using satellite and airborne images, usually processed within 3–6 hr. The results provide unprecedented temporal data sets of lava volume, thickness, and effusion rate. This enabled rapid assessment of eruption evolution and hazards to populated areas, important infrastructure, and tourist centers. The lava flow field has a mean lava thickness exceeding 30 m, covers 4.8 km2 and has a bulk volume of 150 ± 3 × 106 m3. The March–September mean bulk effusion rate is 9.5 ± 0.2 m3/s, ranging between 1 and 8 m3/s in March–April and increasing to 9–13 m3/s in May–September. This is uncommon for recent Icelandic eruptions, where the highest discharge usually occurs in the opening phase.
KW - Fagradalsfjall
KW - effusive eruption
KW - lava flows
KW - near real-time monitoring
KW - photogrammetry
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U2 - 10.1029/2021GL097125
DO - 10.1029/2021GL097125
M3 - Article
AN - SCOPUS:85133951585
SN - 0094-8276
VL - 49
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 13
M1 - e2021GL097125
ER -