and another five between 3 and 4. Only five earthquakes occurred at the northern part of the intrusion, all under 1.5 in magnitude.
5 November 2014 - photos from flight
Visibility was good during surveillance flight yesterday, 4 November, with almost no wind. The gas cloud was two layered, from the ground to 700 m hight and in about 1500-2500 m hight.
Two layers of gas
Visible distinction
/earthquakes-and-volcanism/articles/nr/3023
November, with almost no wind.
The gas cloud was two layered, from the ground to 700 m hight and in about 1500-2500 m
hight.
Two layers of gas
Visible distinction as Mountain Herðubreið rises tall from the lower layer but is crowned by
the upper layer. Enlarge. Photo: Guðrún Nína Petersen.
Steam vents
Steam vents rise from the lava field: water vapor. Gas further. Photo: Guðrún Nína Petersen
/media/jar/Bardarbunga-2014_November-events.pdf
and another five between 3 and 4. Only five earthquakes occurred at the northern part of the intrusion, all under 1.5 in magnitude.
5 November 2014 - photos from flight
Visibility was good during surveillance flight yesterday, 4 November, with almost no wind. The gas cloud was two layered, from the ground to 700 m hight and in about 1500-2500 m hight.
Two layers of gas
Visible distinction
/earthquakes-and-volcanism/articles/nr/3023/
at Fljótshlíð, 10-15 km NW of vents. Meltwater discharge suggest similar lava activity. Processing of data obtained yesterday shows that lava had advanced 400-500 m northwards from crater, forming an ice depression extending some 700 m from vents.
Overall assessment: Magma flow rate has remained at similar level over the last few days while plume activity is slowly declining. Lava continues
/earthquakes-and-volcanism/articles/nr/1884
indicate 200-600 kg/s SO2 over the last week of the eruption.
Relating SO2 to other gases measured by FTIR preliminarily indicates 250-700 kg/s CO2, 2-6 kg/s HCl, 3-8 kg/s HF, and <1 kg/s CO.
These emission rates may be underdetections due to measurement conditions. Experiments will be made this week to help us constrain the measurement bias and uncertainty, and these emission rates will likely
/earthquakes-and-volcanism/articles/nr/3001
- gas emission rates
Measurements of SO2 emission rates with permanently installed scanning DOAS instruments
preliminarily indicate 200-600 kg/s SO2 over the last week of the eruption.
Relating SO2 to other gases measured by FTIR preliminarily indicates 250-700 kg/s CO2, 2-6
kg/s HCl, 3-8 kg/s HF, and <1 kg/s CO.
These emission rates may be underdetections due to measurement conditions
/media/jar/Bardarbunga-2014_September-events.pdf
indicate 200-600 kg/s SO2 over the last week of the eruption.
Relating SO2 to other gases measured by FTIR preliminarily indicates 250-700 kg/s CO2, 2-6 kg/s HCl, 3-8 kg/s HF, and <1 kg/s CO.
These emission rates may be underdetections due to measurement conditions. Experiments will be made this week to help us constrain the measurement bias and uncertainty, and these emission rates will likely
/earthquakes-and-volcanism/articles/nr/3001/