Logo link to homepage

Fisher

Photo of this volcano
  • United States
  • Alaska
  • Stratovolcano
  • 1830 CE
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 54.65°N
  • 164.43°W

  • 1112 m
    3647 ft

  • 311350
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Fisher.

The Global Volcanism Program has no Weekly Reports available for Fisher.

The Global Volcanism Program has no Bulletin Reports available for Fisher.

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Eruptive History

There is data available for 6 Holocene eruptive periods.

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1830 Aug Unknown Confirmed 2 Historical Observations Mount Finch
1826 Oct 11 1827 Jan (?) Confirmed 3 Historical Observations Mount Finch
1795 (in or before) Unknown Confirmed   Historical Observations
0400 ± 50 years Unknown Confirmed   Radiocarbon (uncorrected) Turquoise cone
3170 BCE ± 75 years Unknown Confirmed 5 Radiocarbon (uncorrected) Turquoise cone
7420 BCE ± 200 years Unknown Confirmed 6 Radiocarbon (uncorrected) NE and SW parts of Fisher caldera
Deformation History

There is data available for 1 deformation periods. Expand each entry for additional details.


Deformation during 1992 - 2010 [Subsidence; Observed by InSAR]

Start Date: 1992 Stop Date: 2010 Direction: Subsidence Method: InSAR
Magnitude: Unknown Spatial Extent: Unknown Latitude: Unknown Longitude: Unknown

Remarks: Fisher Caldera has been subsiding persistently.

Figure (see Caption)

Velocity maps from (a) PSI and (b) SBAS processing, respectively.

From: Gong et al. 2015.


Reference List: Lu and Dzurisin 2014; Mann and Freymueller 2003; Gong et al. 2015.

Full References:

Gong, W., Meyer, F. J., Lee, C. W., Lu, Z., & Freymueller, J., 2015. Measurement and interpretation of subtle deformation signals at Unimak Island from 2003 to 2010 using weather model- assisted time series InSAR. J. Geophys. Res., 120(2), 1175-1194.

Lubis, A. M., 2014. Uplift of Kelud Volcano Prior to the November 2007 Eruption as Observed by L-Band Insar. Journal of Engineering and Technological Sciences, 46(3), 245-257.

Mann D, Freymueller J, 2003. Volcanic and tectonic deformation on Unimak Island in the Aleutian Arc, Alaska. J. Geophys. Res., 108(B2), 2108. https://doi.org/10.1029/2002JB001925

Emission History

There is no Emissions History data available for Fisher.

Photo Gallery

This 1974 view shows part of the interior of Fisher caldera on Unimak Island in the eastern Aleutian Islands. Fisher is an 11 x 18 km caldera that formed about 9100 years ago during the eruption of compositionally zoned ash flows that overtopped topographic barriers more than 500 m in elevation. The caldera contains two large lakes and a smaller lake that drains through a notch in the south caldera rim. There has been one poorly documented historical eruption from Fisher in 1826.

Photo by Tom Miller, 1974 (U.S. Geological Survey).
See title for photo information.
GVP Map Holdings

The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included. The maps database originated over 30 years ago, but was only recently updated and connected to our main database. We welcome users to tell us if they see incorrect information or other problems with the maps; please use the Contact GVP link at the bottom of the page to send us email.

Title: Dutch Harbor
Publisher: US Department of Commerce, NOAA National Ocean Service
Country: United States
Year: 1987
Series: Section Aero Chart
Map Type: Navigation
Scale: 1:500,000
Map of Dutch Harbor
Title: Cold Bay
Publisher: US Department of Commerce, NOAA National Ocean Service
Country: United States
Year: 1987
Series: Sectional Aero Chart
Map Type: Topographic
Scale: 1:500,000
Map of Cold Bay
Title: United States
Publisher: DMA Aerospace Center
Country: United States
Year: 1987
Series: ONC
Map Type: Topographic
Scale: 1:1,000,000
Map of United States
Title: Map Showing Distribution, Composition, and Age of Late Cenozoic Volcanic Craters in Alaska
Publisher: US Geological Survey
Country: United States
Year: 1986
Series: Misc Investigations
Map Type: Geology
Scale: 1:1,000,000
Map of Map Showing Distribution, Composition, and Age of Late Cenozoic Volcanic Craters in Alaska
Title: Saint George Basin Regional Map
Publisher: USDI Minerals Management Service
Country: United States
Year: 1984
Series: OCSRM maps
Map Type: Bathymetric
Scale: 1:1,000,000
Map of Saint George Basin Regional Map
Title: N Aleutian Basin, Gulf of AK
Publisher: USDI Minerals Management Service
Country: United States
Year: 1984
Series: OCSRM maps
Map Type: Bathymetric
Scale: 1:1,000,000
Map of N Aleutian Basin, Gulf of AK
Title: False Pass
Publisher: US Department of Commerce, NOAA National Ocean Service
Country: United States
Year: 1984
Map Type: Bathymetric
Scale: 1:250,000
Map of False Pass
Title: N Pacific Ocean, NOS Seamount Series
Publisher: US Department of Commerce, NOAA National Ocean Service
Country: United States
Year: 1973
Map Type: Bathymetric
Scale: 1:1,000,000
Map of N Pacific Ocean, NOS Seamount Series
Title: Magnetic Map of N Pacific Ocean
Publisher: US Department of Commerce, NOAA National Ocean Service
Country: United States
Year: 1973
Series: Seamap
Map Type: Geophysical (Magnetic)
Scale: 1:1,000,000
Map of Magnetic Map of N Pacific Ocean
Title: Gravity Map of N Pacific Ocean
Publisher: US Department of Commerce, NOAA National Ocean Service
Country: United States
Year: 1973
Series: Seamap
Map Type: Geophysical (Gravity)
Scale: 1:1,000,000
Map of Gravity Map of N Pacific Ocean
Title: Unimak
Publisher: US Geological Survey
Country: United States
Year: 1966
Series: AK Recon Topo 250
Map Type: Topographic
Scale: 1:250,000
Map of Unimak
Title: False Pass
Publisher: US Geological Survey
Country: United States
Year: 1956
Series: AK Recon Topo 250
Map Type: Topographic
Scale: 1:250,000
Map of False Pass
Title: Fort Randall
Publisher: US Geological Survey
Country: United States
Year: 1943
Series: AK Recon Topo 250
Map Type: Geographic
Scale: 1:250,000
Map of Fort Randall
Smithsonian Sample Collections Database

The following 11 samples associated with this volcano can be found in the Smithsonian's NMNH Department of Mineral Sciences collections, and may be availble for research (contact the Rock and Ore Collections Manager). Catalog number links will open a window with more information.

Catalog Number Sample Description Lava Source Collection Date
NMNH 117233-174 Pumice -- --
NMNH 117233-175 Pumice -- --
NMNH 117233-176 Pumice -- --
NMNH 117233-177 Volcanic Bomb -- --
NMNH 117233-178 Tuff -- --
NMNH 117233-179 Pumice -- --
NMNH 117233-181 Pumice -- --
NMNH 117233-182 Glass -- --
NMNH 117233-185 Pumice -- --
NMNH 117233-186 Obsidian -- --
NMNH 117233-187 Obsidian -- --
Affiliated Sites