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Earthquake Rates - Past Week - Mauna Loa
December 31, 2019

Earthquake Rates - Past Week - Mauna Loa

Earthquake Rates and Depths - Past Week - Mauna Loa. Number of earthquakes per day during the past week (blue bars). The red line is the cumulative moment (energy) release.

Earthquake Rates - Past 5 Years Mauna Loa
December 31, 2019

Earthquake Rates - Past 5 Years Mauna Loa

Earthquake Rates - Past 5 Years Mauna Loa. Number of earthquakes per month during the past five years (blue bars). The red line is the cumulative moment (energy) release.

Earthquake Depths - Past Week Mauna Loa
December 31, 2019

Earthquake Depths - Past Week Mauna Loa

Earthquake Depths - Past Week Mauna Loa. Depth of earthquakes during the past week in the area shown on the map above. On both figures, circle-size represents magnitude, and color indicates depth. An interactive earthquake plot can be found on the HVO Earthquakes page.

Earthquake Depths - Past 5 Years Mauna Loa
December 31, 2019

Earthquake Depths - Past 5 Years Mauna Loa

Earthquake Depths - Past 5 Years Mauna Loa. Depth of earthquakes during the past week in the area shown on the map above. On both figures, circle-size represents magnitude, and color indicates depth.

Cross-caldera Distance Change - Past 5 Years Mauna Loa
December 31, 2019

Cross-caldera Distance Change - Past 5 Years Mauna Loa

Cross-caldera Distance Change - Past 5 Years Mauna Loa. Changes in distance between two GPS stations on opposite sides of Moku'āweoweo, Mauna Loa's summit caldera. Extension across the caldera is often an indication of inflation of the shallow summit magma reservoir.

Electronic Tilt at Mauna Loa Summit - Past Week
December 31, 2019

Electronic Tilt at Mauna Loa Summit - Past Week

Electronic Tilt at Mauna Loa Summit - Past Week. Tilt data from a site near the northwest rim of Mauna Loa's summit caldera. The tiltmeter responds to daily and seasonal temperature fluctuations as well as possible changes in Mauna Loa's magma storage system.

Summit Vertical Motion - Past 5 Years Mauna Loa
December 31, 2019

Summit Vertical Motion - Past 5 Years Mauna Loa

Summit Vertical Motion - Past 5 Years Mauna Loa. Vertical motion of a GPS station on the southeast side of Mauna Loa's summit caldera. This station is in an area that has historically shown the largest amount of uplift with inflation. An offset in early 2014 is due to an equipment change at the station and is not related to deformation of the volcano.

Earthquake Hypocenters Map - Past Month Mauna Loa
December 31, 2019

Earthquake Hypocenters Map - Past Month Mauna Loa

Earthquake Hypocenters Map - Past Month Mauna Loa.  Map showing locations of earthquakes during the past month. 

Earthquake Hypocenters Cross Section - Past Month Mauna Loa
December 31, 2019

Earthquake Hypocenters Cross Section - Past Month Mauna Loa

Earthquake Hypocenters Cross Section - Past Month Mauna Loa. Depth of earthquakes (circles) during the past month. Circle-size represents magnitude, and color indicates depth.

Earthquake Rates - Past Month Mauna Loa
December 31, 2019

Earthquake Rates - Past Month Mauna Loa

Earthquake Rates - Past Month Mauna Loa. Number of earthquakes per day during the past month (blue bars). The red line is the cumulative moment (energy) release. 

Earthquake Depths - Past Month Mauna Loa
December 31, 2019

Earthquake Depths - Past Month Mauna Loa

Earthquake Depths - Past Month Mauna Loa. Depth of earthquakes during the past month in the area shown on the map above. On both figures, circle-size represents magnitude, and color indicates depth.

Electronic Tilt at Mauna Loa Summit - Past Month
December 31, 2019

Electronic Tilt at Mauna Loa Summit - Past Month

Electronic Tilt at Mauna Loa Summit - Past Month. Tilt data from a site near the northwest rim of Mauna Loa's summit caldera. The tiltmeter responds to daily and seasonal temperature fluctuations as well as possible changes in Mauna Loa's magma storage system.