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Over the past few months, HVO geophysicists have been conducting the annual high-precision GPS survey of Kīlauea
August 3, 2021

Annual Kīlauea GPS Survey—2021

Over the past few months, HVO geophysicists have been conducting the annual high-precision Global Positioning System (GPS) survey of Kīlauea. The annual survey supplements HVO's continuous GPS monitoring stations and provides information on vertical and horizontal deformation of the ground surface. These measurements inform HVO about Kīlauea south flank movement as well as

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webcam image of shield volcano
June 17, 2021

[MKcam] - Mauna Loa's Summit and Northeast Rift Zone

This image is from a research camera positioned on Mauna Kea. The camera looks south toward the summit and Northeast Rift Zone of Mauna Loa.

Animated GIF showing past 24 hours of live webcam views of shield volcano
June 16, 2021

[MKcam] - Mauna Loa's Summit and Northeast Rift Zone from Mauna Kea

Last 24 Hours - Live Image of Mauna Loa's Summit and Northeast Rift Zone from Mauna Kea [MKcam].

Disclaimer: The webcams are operational 24/7 and faithfully record the dark of night if there are no sources of incandescence or other lights. Thermal webcams record heat rather than light and get better views through volcanic gas. At times, clouds and rain obscure

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GPS campaign survey stations high on the flanks of Mauna Loa offer expansive views of neighboring volcanoes
May 31, 2021

Annual Mauna Loa GPS Survey—2021

GPS campaign survey stations high on the flanks of Mauna Loa offer expansive views of neighboring volcanoes. From this station located west of Mauna Loa summit, Hualālai volcano is visible. Most Mauna Loa GPS campaign survey sites have been occupied every year since 1996, whereas less active volcanoes Hualālai and Haleakalā are surveyed every 3–5 years. USGS photo by S.

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May 30, 2021

Mauna Loa MKcam (New Webcam)

This video shows a typical day on Mauna Loa, captured from a new webcam looking south towards the volcano. The field of view covers the summit region and much of the Northeast Rift Zone. On clear days, the small gas plume from Kīlauea's summit can sometimes be

Color photograph of volcano profile
May 29, 2021

Annotated Mauna Loa MKcam image

Annotated MKcam image, taken on May 29, 2021. The new MKcam is positioned on Mauna Kea with a south view of Mauna Loa summit and Northeast Rift Zone. The MKcam view also includes features on the East Rift Zone and summit of Kīlauea, including Kānenuiohamo, Maunaulu, and the Halema‘uma‘u plume. Kūlani, a cone on the Northeast Rift Zone of Mauna Loa, is also visible in the

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Map showing earthquake activity
May 20, 2021

Map showing Island of Hawai‘i earthquake activity over the past week

Map and plot showing earthquakes at 20-40 km (12-25 miles) depth beneath the Island of Hawai‘i over the past week. Most of the earthquakes at this depth were clustered beneath the southern edge of the island near the town of Pāhala (blue dots).  USGS graphic.

Color photograph of caldera
May 15, 2021

Routine visit to Mauna Loa summit

On May 15, USGS Hawaiian Volcano Observatory geologists did a routine hike to the summit of Mauna Loa and inspected summit monitoring equipment. Clear weather provided good views across the floor of Moku‘āweoweo, Mauna Loa's summit caldera, and nothing unusual was observed.

Color photograph of caldera
May 15, 2021

Routine visit to Mauna Loa summit

A USGS Hawaiian Volcano Observatory geologist inspects the thermal camera at the summit of Mauna Loa on May 15, 2021.

On the west side of Mauna Loa summit, a campaign GPS (center-right) measures its location for a period of 2–3 days
May 11, 2021

Mauna Loa campaign GPS survey—May 11, 2021

On the west side of Mauna Loa summit, a campaign GPS (center-right) measures its location for a period of 2–3 days. This site has been occupied every year by helicopter since 1994. Mauna Kea, Hualālai and Haleakalā can be seen in the distance. USGS photo taken by S. Conway on May 11, 2021, during the 2021 Mauna Loa GPS campaign survey. 

HVO geophysicists completed the annual high-precision Global Positioning System (GPS) survey of Mauna Loa
May 11, 2021

Global Positioning System (GPS) survey of Mauna Loa recently completed

Recently, HVO geophysicists completed the annual high-precision Global Positioning System (GPS) survey of Mauna Loa. The annual survey supplements HVO's continuous GPS monitoring stations and provides information on vertical and horizontal deformation of the ground surface. These measurements inform HVO about the volume changes within subsurface magma reservoirs at Mauna

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During the annual Mauna Loa GPS campaign, 33 campaign stations are occupied with GPS instruments for days to weeks
May 11, 2021

Annual Mauna Loa GPS Survey—2021

During the annual Mauna Loa GPS campaign, 33 campaign stations are occupied with GPS instruments for days to weeks. The stations are spread across the flanks of the volcano and provide a synoptic picture of deformation on the volcano over the past year. The location of this survey was on the north flank of Mauna Loa, with clear views of Mauna Kea visible in the background

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