Table 3 Chemical composition of Sulfur Banks gases, Kilauea
From: In-situ monitoring of 3He/4He in summit gases of Kilauea Volcano (Hawaii) prior to the 2020 eruption
Sulphur Banks Dec 2020, evacuated, no caustic | in mol % | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Sample ID | Date | Location Type | Sample Type | CO2 | calc. CO2* | H2 | Ar | O2 | N2 | CH4 |
SB20-1 | 12/10/20 | VGPS Exhaust, VGPS pumped | near-ground gas | 0.0710 | --- | - | 0.8805 | 20.34 | 78.71 | - |
SB20-2 | 12/10/20 | Tee near fumarole, hand pumped line | fumarole | 92.34 | 99.6 | 0.1299 | 0.0683** | 0.25 | 6.99 | 0.0110 |
SB20-3 | 12/12/20 | VGPS Exhaust | near-ground gas | 0.0800 | --- | 0.0070 | 0.8441 | 20.18 | 78.88 | - |
SB20-4 | 12/12/20 | Tee near fumarole, bad valve on bottle | fumarole | --- | --- | --- | --- | --- | --- | --- |
SB20-5 | 12/13/20 | VGPS Exhaust | near-ground gas | 0.1081 | --- | - | 0.8036 | 18.92 | 80.16 | - |
SB20-6 | 12/13/20 | Tee near fumarole | fumarole | 39.15† | 85.6 | - | 0.5059 | 11.26 | 49.08 | - |
SB20-7 | 12/15/20 | VGPS Exhaust | near-ground gas | 0.0810 | --- | - | 0.8623 | 19.78 | 79.28 | - |
SB20-8 | 12/15/20 | Tee near fumarole | fumarole | 92.75 | 95.9 | - | 0.0329** | 0.66 | 6.41 | 0.0020 |
SB20-9 | 12/17/20 | VGPS Exhaust | fumarole-inst. | 24.91† | 86.0 | 0.0150 | 0.6617 | 14.16 | 60.26 | - |
SB20-10 | 12/17/20 | Tee near fumarole | fumarole | 60.46† | 88.0 | - | 0.2930 | 6.84 | 32.40 | 0.0010 |
SB20-11 | 12/19/20 | VGPS Exhaust | fumarole-inst. | 31.20† | 86.9 | - | 0.5971 | 12.75 | 55.45 | - |
SB20-12 | 12/19/20 | Tee near fumarole | fumarole | 92.21 | 92.7 | 0.0430 | 0.0438** | 1.03 | 6.56 | 0.0020 |
Dry air | ----- | ----- | ambient | 0.0412 | --- | 0.000003 | 0.934 | 20.95 | 78.08 | 0.0002 |