Posted by: Claire Puleio (cepuleio@alaska.edu), Mon Dec 15, 2025 20:35 (2035 UTC)
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AVO-GI Meeting Notes December 15, 2025

Great Sitkin: Orange
Shishaldin: Yellow

SIC: Matt Haney
CS: Ronni Grapenthin
Duty Scientist: Tim Orr
Duty Remote Sensor: Tim Orr
Duty Seismologist: John Lyons
Primary alarms: John Lyons
Secondary alarms: Tim Orr
AVO Radio: Abbey Nastan

BIG PICTURE:

Great Sitkin:
The color code remains at ORANGE.

Shishaldin:
The color code remains at YELLOW.

General Highlights:
- David is out, Ronni is acting CS, Jess will take over after AGU. Lot’s of folks at AGU!

SEISMOLOGY:
Highlights from Scott:
- Edgecumbe: 3 events
- Wrangell: 2 events
- Spurr: 7 events, including 1 DLP near Spurr with a depth of ~23 km
- Redoubt: 5 events
- Iliamna: 20 events
- Augustine: 3 events, including 1 unusual EQ ~2 km ENE with a depth of ~14 km
- Fourpeaked: 1 event
- Katmai Region: 33 events
- Snowy/Steller: 3 events
- Mount Katmai: 10 events
- Trident/Novarupta: 7 events
- Martin/Mageik: 14 events
- Shishaldin: 2 events, including 1 MDLP at a depth of ~19 km
- Westdahl: 1 event
- Great Sitkin: 6 events
- Semisopochnoi: 5 events, including 2 MDLPs at depths of ~16 and ~11 km
- Little Sitkin: 1 event

GEODESY:

Ronni Grapenthin:
- No noticeable deformation, lots of AGU prep happening last week. Making progress on the Semisopochnoi paper, which is nearing completion.

FIELD OPS:

Ellie Boyce:
- Little Sitkin stations have come and gone, but as of this morning they should be in. Some brief outages on some of the Kenai based networks, seems like largely related to ISP issues. Pretty short outages, may see some small gaps as a results

GAS:

Claire Puleio:
- No Satellite SO2 detections seen over the past week. Cleveland DOAS has observed SO2 over the past week ranging from 0-1200 t/day.

Notes by Claire Puleio (cepuleio@alaska.edu) and Ronni Grapenthin

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This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454424