Hawaiian Volcano Observatory

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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 - Kilauea
December 31, 2019

Earthquake Hypocenters Map - Past Month - Kīlauea

Map showing locations of earthquakes during the past month.

Earthquake Hypocenters Cross Section - Past 5 Years - Kīlauea
December 31, 2019

Earthquake Hypocenters Cross Section - Past 5 Years - Kīlauea

 Depth of earthquakes (circles) during the past 5 years. Circle-size represents magnitude, and color indicates depth. 

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

Earthquake Hypocenters Map - Past Week Mauna Loa

Earthquake Hypocenters Map and Cross Section - Past Week Mauna Loa. Map showing locations of earthquakes during the past week. 

Depth of Earthquakes - Past Month - Kīlauea
December 31, 2019

Depth of Earthquakes - Past Month - Kīlauea

Depth of earthquakes (circles) during the past month. Circle-size represents magnitude, and color indicates depth.

Earthquake Rates - Past 5 Years - Kīlauea
December 31, 2019

Earthquake Rates - Past 5 Years - Kīlauea

Number of earthquakes per month during the past 5 years (blue bars). The red line is the cumulative moment (energy) release. 

Earthquake Hypocenters Depth - Past Week Mauna Loa
December 31, 2019

Earthquake Hypocenters Depth - Past Week Mauna Loa

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

Earthquake Rates and Depths - Past Month - Kīlauea
December 31, 2019

Earthquake Rates and Depths - Past Month - Kīlauea

Number of earthquakes per day during the past month (blue bars). The red line is the cumulative moment (energy) release. 

Global Positioning System - Past 5 Years - Kīlauea Summit
December 31, 2019

Global Positioning System - Past 5 Years - Kīlauea Summit

Change in distance between two Global Positioning System (GPS) stations located on opposite sides of Kīlauea's caldera. A rapid increase in distance can be interpreted as inflation of the summit magma reservoir. 

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 Depths - Past Month - Kīlauea
December 31, 2019

Earthquake Depths - Past Month - Kīlauea

Depth of earthquakes during the past month at Kīlauea. Circle-size represents magnitude, and color indicates depth.

Global Positioning System - Past 5 Years - Pu‘u ‘Ō‘ō Cone
December 31, 2019

Global Positioning System - Past 5 Years - Pu‘u ‘Ō‘ō Cone

Change in distance between two stations near Pu‘u ‘Ō‘ō. A rapid increase in distance can be interpreted as inflation of the summit magma reservoir or Pu‘u ‘Ō‘ō magma storage chamber.