Predicting the end of lava flow-forming eruptions from space
Although the volcanological community places great emphasis on forecasting the onset of volcanic eruptions, knowing when an effusive eruption will end is just as important in terms of mitigating hazards. Wadge (J Volcanol Geotherm Res 11:139–168, 1981) postulated that the onset of an episodic, lava flow-forming basaltic eruption is characterized by a rapid increase in effusion rate to a maximum, before decaying over a longer period of time until the eruption ends. We used thermal infrared remote-sensing data acquired by NASA’s MODerate Resolution Imaging Spectroradiometer (MODIS) to derive time-averaged discharge rate (TADR) time series using the method of Harris et al. (J Geophys Res 102(B4):7985–8003, 1997) for 104 eruptions at 34 volcanoes over the last 15 years. We found that 32 eruptions followed the pattern described by Wadge (J Volcanol Geotherm Res 11:139–168, 1981). Based on the MODIS-derived maximum lava discharge rate and a decay constant that best fits the exponential waning phase (updated as each new MODIS TADR observation is added to the time series), the time at which the discharge equals zero, and thus the point at which effusion ends, can be predicted. The accuracy of the prediction improves with the number of data points so that, in the ideal case, the end of effusion can be retro-casted before half of the eruption duration has passed. This work demonstrates the possibility of predicting when an eruption will end using satellite-derived TADR time series acquired in near real time during that eruption. This prediction can be made after an eruption has reached its maximum lava discharge rate and the waning phase of the Wadge trend has begun. This approach therefore only applies to the case of eruption from a chamber undergoing an elastic release of energy during lava flow emplacement, and we provide examples of eruptions where it would not be applicable.
KeywordsPrediction End-of-eruption Effusive eruption Discharge rate MODIS
EB and RW were funded by NASA (NNX14AP34G and NNX14AP37G). Harold Garbeil and Eric Pilger (HIGP) provided programming support and Pete Mouginis-Mark (HIGP) provided some helpful insights. The manuscipt benefited from reviews by Andy Harris and an anonymous reviewer. This is HIGP publication 2252 and SOEST publication 9909.
- Coppola D, Di Muro A, Peltier A, Villeneuve N, Ferrazzini V, Favalli M, Bachèlery P, Gurioli L, Harris AJL, Moune S, Vlastélic I, Galle B, Arellano S, Aiuppa A (2017) Shallow system rejuvenation and magma discharge trends at Piton de la Fournaise volcano (la Réunion Island). Earth Planet Sci Lett 463:13–24CrossRefGoogle Scholar
- Global Volcanism Program (2011) Report on Kizimen (Russia). In: Wunderman R (ed) Bull Glob Volcanism Netw 36:10. Smithsonian Institution. doi: 10.5479/si.GVP.BGVN201110-300230
- Global Volcanism Program (2000) Report on Nyamuragira (DR Congo). In: Wunderman R (ed) Bull Glob Volcanism Netw 25:1. Smithsonian Institution. doi: 10.5479/si.GVP.BGVN200001-223020
- Harlow DH, Power JA, Laguerta EP, Ambubuyog G, White RA, Hoblitt RP (1996) Precursory seismicity and forecasting of the June 15, 1991, eruption of Mount Pinatubo. Fire and Mud: eruptions and lahars of Mount Pinatubo, Philippines, pp 223–247Google Scholar
- Harris AJL (2013) Thermal remote sensing of active volcanoes: a user’s manual. Cambridge University PressGoogle Scholar
- Hooper AJ, Gudmundsson MT, Bagnardi M, Jarosch AH, Spaans K, Magnússon E, Parks M, Dumont S, Ofeigsson B, Sigmundsson F, Hreinsdottir S, Dahm T, Jonsdottir, K (2015) Forecasting of flood basalt eruptions: lessons from Bárðarbunga. AGU Fall Meeting AbstractsGoogle Scholar
- Segall P (2013) Volcano deformation and eruption forecasting. In: Pyle DM, Mather TA, Biggs J (eds) Remote sensing of volcanoes and volcanic processes: integrating observation and modelling. Geol Soc London Spec Pub 380:85–106. doi: 10.1144/SP380.4
- van Manen SM, Blake S, Dehn J, Valcic L (2013) Forecasting large explosions at Bezymianny Volcano using thermal satellite data. Geol Soc Lond Spec Publ 380(1):187–201Google Scholar
- Wright R, Blackett M, Hill-Butler C (2015) Some observations regarding the thermal flux from Earth’s erupting volcanoes for the period of 2000 to 2014. Geophys Res Lett 42. doi: 10.1002/2014GL061997