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Volcano Watch: Kilauea activity update for July 9, 2015


Time-lapse movie of Kīlauea Caldera from Hawaiian Volcano Observatory. July 2-9, 2015. Images courtesy of USGS/HVO


Time-lapse movie of Halemaumau Crater looking Southwest. July 2-9, 2015. Images courtesy of Hawaii Volcanoes National Park


Time-lapse movie of Halemaumau Overlook Vent. July 2-9, 2015. Images courtesy of USGS/HVO


Time-lapse movie of Halemaʻumaʻu Overlook Vent from Hawaiian Volcano Observatory. July 2-9, 2015. Images courtesy of USGS/HVO


Time-lapse thermal image movie of Halemaumau Overlook Vent. July 2-9, 2015. Images courtesy of USGS/HVO


Time-lapse movie of Halemaumau Crater from the south rim. July 2-9, 2015. Images courtesy of USGS/HVO


Time-lapse movie of Halemaumau Overlook Vent from the West Rim of Halemaumau Crater. July 2-9, 2015. Images courtesy of USGS/HVO

(Activity updates are written by scientists at the U.S. Geological Survey’s Hawaiian Volcano Observatory.)

Kīlauea’s summit lava lake level, which fluctuates in response to summit inflation and deflation, remained fairly steady at 45-50 m (150-165 ft) below the vent rim for much of the past week, but dropped to about 39 m (128 ft) on July 7-8.

Kīlauea’s East Rift Zone lava flow continues to feed widespread breakouts northeast of Puʻu ʻŌʻō. Active flows are slowly covering and widening the flow field, but remain within about 8 km (5 mi) of Puʻu ʻŌʻō.

There were no earthquakes reported felt on the Island of Hawai‘i during the past week.

Please visit the HVO website (hvo.wr.usgs.gov) for past Volcano Watch articles, Kīlauea daily eruption updates and other volcano status reports, current volcano photos, recent earthquakes, and more; call (808) 967-8862 for a Kīlauea summary update; email questions to askHVO@usgs.gov.


Time-lapse multi-image movie of Pu’u ‘O’o Crater. July 2-9, 2015. Images courtesy of USGS/HVO


Time-lapse movie from images gathered from a temporary thermal camera looking into Pu’u ‘O’o Crater. The temperature scale is in degrees Celsius up to a maximum of 500 Celsius (932 Fahrenheit) for this camera model, and scales based on the maximum and minimum temperatures within the frame. Thick fume, image pixel size and other factors often result in image temperatures being lower than actual surface temperatures. July 2-9, 2015. Images courtesy of USGS/HVO


Time-lapse movie of Pu’u ‘O’o Crater North Flank from the North Rim. July 2-9, 2015. Images courtesy of USGS/HVO


Video courtesy of Tropical Visions Video with air transportation by Paradise Helicopters.

This map shows recent changes to Kīlauea’s active East Rift Zone lava flow field. The area of the flow on June 30 is shown in pink, while widening and advancement of the flow as of July 7 is shown in red. The yellow line is the active lava tube. Puʻu ʻŌʻō lava flows erupted prior to June 27, 2014, are shown in gray.

This map shows recent changes to Kīlauea’s active East Rift Zone lava flow field. The area of the flow on June 30 is shown in pink, while widening and advancement of the flow as of July 7 is shown in red. The yellow line is the active lava tube. Puʻu ʻŌʻō lava flows erupted prior to June 27, 2014, are shown in gray.

This small-scale map shows Kīlauea’s active East Rift Zone lava flow in relation to lower Puna. The area of the flow on June 30 is shown in pink, while widening and advancement of the flow as of July 7 is shown in red.  The blue lines show steepest-descent paths calculated from a 1983 digital elevation model (DEM; for calculation details, see http://pubs.usgs.gov/of/2007/1264/). Steepest-descent path analysis is based on the assumption that the DEM perfectly represents the earth's surface. DEMs, however, are not perfect, so the blue lines on this map can be used to infer only approximate flow paths. Puʻu ʻŌʻō lava flows erupted prior to June 27, 2014, are shown in gray.

This small-scale map shows Kīlauea’s active East Rift Zone lava flow in relation to lower Puna. The area of the flow on June 30 is shown in pink, while widening and advancement of the flow as of July 7 is shown in red.
The blue lines show steepest-descent paths calculated from a 1983 digital elevation model (DEM; for calculation details, see pubs.usgs.gov/of/2007/1264/). Steepest-descent path analysis is based on the assumption that the DEM perfectly represents the earth’s surface. DEMs, however, are not perfect, so the blue lines on this map can be used to infer only approximate flow paths. Puʻu ʻŌʻō lava flows erupted prior to June 27, 2014, are shown in gray.

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