Posted by: Kyungmin Kim (kkim39@alaska.edu), Thu Dec 25, 2025 01:25 (0125 UTC)
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AVO-GI Meeting Notes Dec 22, 2025

Great Sitkin: Orange
Shishaldin : Yellow

SIC: Matt Haney
CS: David Fee (Acting Ronni Grapenthin 12/13 - 22, Jessica Larsen 12/23-27)
Duty Scientist: Cheryl Searcy
Duty Remote Sensor: Jordan Lubbers
Duty Seismologist: Jeremy Pescik
Primary alarms: Jeremy Pescik
Secondary alarms: Cheryl Searcy


BIG PICTURE:

Shishaldin:
The color code remains at YELLOW.

Great Sitkin:
The color code remains at ORANGE.

SEISMOLOGY:
Highlights from Scott:
- Edgecumbe 3 events
- Wrangell 3 events
- Spurr 16 events (2 deep LPs)
- Redoubt 3 events
- Iliamna 20 events
- Four peaked Mountain 4 events
- Katmai region 16 events
3 events snowy/stellar
3 events Mount Katmai
6 events Trident/Novarupta (1 deep LP)
3 events Martin/Megeik
- Shishaldin 2 events
- West dahl 3 events
- Makushin 53 events
- Okmok 2 events (1 deep LP)
- Cleveland 8 events
- Great Sitkin 7 events
- Gareloi 8 events
- Davidof 1 event

GEODESY:

Ronni Grapenthin:
- no notable volcanic deformation detected
- There is no data from Aniakchak due to Port Heiden outage, likely still deflating
- Snow loading signals were observed on Spurr.
- Paper submitted to BV by Simon Plank with Hannah Diettrich, Ronni Grapenthin, and many others as co-author: Growth and erosion of volcanic islands since 1963 analyzed by multi-sensor satellite data and historical records


GEOLOGY:

Jessica Larsen:
- Participated in the AGU last week with lots of great interactions and feedback.


GAS:

Taryn Lopez:
-No SO2 detections for Alaska volcanoes seen in satellite data over the past week. Cleveland SO2 emissions were seen most day on the NOVAC network with emission rate typically <500 t/day


STUDENTS:

- AGU last week, No update


Notes by Kyungmin Kim (kkim39@alaska.edu) and Jessica Larsen

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This message is posted in the AVO Logs at https://www.avo.alaska.edu/admin/logs/posts/show/454491