Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/10294

Authors: Aiuppa, A.*
Bani, P.*
Moussallam, Y.*
Di Napoli, R.*
Allard, P.*
Gunawan, H.*
Hendrasto, M.*
Tamburello, G.*
Title: First determination of magma-derived gas emissions from Bromo volcano, eastern Java (Indonesia)
Title of journal: Journal of volcanology and geothermal research
Series/Report no.: /304(2015)
Publisher: Elsevier Science Limited
Issue Date: 10-Sep-2015
DOI: 10.1016/j.jvolgeores.2015.09.008
Keywords: Bromo volcano
Volcanic gases
SO2 and CO2 fluxes
Tengger Caldera
Eastern Java, Indonesia
Multi-GAS
Abstract: The composition and fluxes of volcanic gases released by persistent open-vent degassing at Bromo Volcano, east Java (Indonesia), were characterised in September 2014 from both in-situ Multi-GAS analysis and remote spectroscopic (dual UVcamera)measurements of volcanic plumeemissions. Our results demonstrate that Bromo volcanic gas is water-rich (H2O/SO2 ratios of 56–160) and has CO2/SO2 (4.1 ± 0.7) and CO2/Stot (3.2 ± 0.7) ratios within the compositional range of other high-temperature magma-derived gases in Indonesia. H2/H2O and H2S/SO2 ratios constrain a magmatic gas source with minimal temperature of ~700 °C and oxygen fugacity of 10-17–10-18 bars. UV camera sensing on September 20 and 21, 2014 indicates a steady daily mean SO2 output of 166 ± 38 t d−1, which is ten times higher than reported from few previous studies. Our results indicate that Bromo ranks amongst the strongest sources of quiescent volcanic SO2 emission measured to date in Indonesia, being comparable to Merapi volcano in central Java. By combining our results for the gas composition with the SO2 plume flux, we assess for the first time the fluxes of H2O (4725 ± 2292 t d−1), CO2 (466 ± 83 t d−1), H2S (25 ± 12 t d−1) and H2 (1.1 ± 0.8) from Bromo. Our study thus contributes a new piece of information to the still limited data base for volcanic gas emissions in Indonesia, and confirms that much remain to be done to fully assess the contribution of this very active arc region to global volcanic gas fluxes.
Appears in Collections:04.08.01. Gases
Papers Published / Papers in press

Files in This Item:

File Description SizeFormatVisibility
Aiuppa et al JVGR_2015.pdfMain article2.64 MBAdobe PDFonly authorized users View/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Share this record
Del.icio.us

Citeulike

Connotea

Facebook

Stumble it!

reddit


 

Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA