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Pinatubo91_installing_tiltmeter_at_UBO_06-01-91.jpg
Installing tiltmeter at UBO station, caldera rim.
U.S. Geological Survey Photograph taken on June 1, 1991, by John Ewert.
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Pinatubo91_eruption_plume_06-12-91.jpg
The June 12, 1991 eruption column from Mount Pinatubo taken from the east side of Clark Air Base.
U.S. Geological Survey Photograph taken on June 12, 1991, 08:51 hours, by Dave Harlow.
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Pinatubo91_eruption_from_clark_air_base_06-12-91.jpg
The June 12, 1991 eruption column from Mount Pinatubo taken from Clark Air Base.
U.S. Geological Survey Photograph taken on June 12, 1991, by Richard P. Hoblitt.
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Pinatubo91_lateral_blast_plume_pinatubo_06-15-91.jpg
View to west from Clark Air Base of Pinatubo's lateral blast cloud of eruption of 5:55 am.
U.S. Geological Survey Photograph taken on June 15, 1991, by Richard P. Hoblitt.
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Pinatubo91_lahar_and_tephra_damage_sapangbato_06-22-91.jpg
Aerial view of lahar damage of 15 June, 1991, and damage to roofs from tephra fall in Sapangbato, along Abacon River south of Clark Air Base.
U.S. Geological Survey Photograph taken on June 22, 1991, by Richard P. Hoblitt.
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Pinatubo91_ash_covered_clark_air_base_06-24-91.jpg
Aerial view of part of Clark Air Base showing buildings and vegetation damaged by tephra (ash) fall of 15 June, 1991.
U.S. Geological Survey Photograph taken on June 24, 1991, by Willie Scott.
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Pinatubo91_ash_deposits_06-26-91.jpg
Tephra (ash) fall deposits of mid-June in schoolyard in Linasin (San Marcelino), Zambales, about 30 kilometers southwest of Pinatubo. The base l2 centimeters of brownish-gray ash fell between June 12th and early June 15th, 1991. It is overlain by 14 centimeters of thick pumice-fall deposit on the afternoon of June 15th. Such tephra loads, along with typhoon rain and wind and earthquakes, damaged many structures.
U.S. Geological Survey Photograph taken on June 26, 1991, by Willie Scott.
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Pinatubo91_juvenile_pumice_bucao_valley_06-27-91.jpg
Two types of juvenile pumices in pyroclastic flow deposits in Bucao Valley.
U.S. Geological Survey Photograph taken on June 27, 1991, by Willie Scott.
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Pinatubo91_marella_valley_ash_plume_pinatubo_06-29-91.jpg
The June 29, 1991 eruption column from Mount Pinatubo with Marella River Valley. Aerial view to north of pyroclastic-flow deposits in Marella River valley (in foreground) and tributaries of Balin Buquero River (in distance) with ash plume rising from Pinatubo’s caldera. Pyroclastic-flow deposits to east of isolated hill in right center as about 200 meters thick. Dark streaks on pyroclastic-flow deposits are lahar deposits generated by rains.
U.S. Geological Survey Photograph taken on June 29, 1991, by Ed Wolfe.
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Pinatubo91_marella_river_pyroclastic_flow_deposits_07-01-91.jpg
View to northeast across pyroclastic-flow deposits and fumarole in Marella River valley toward Pinatubo. The vegetation in the foreground is stripped and charred by ash-cloud surges of pyroclastic flows.
U.S. Geological Survey Photograph taken on July 1, 1991 by Willie Scott.
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Pinatubo91_bamban_river_breached_levees_07-16-91.jpg
Aerial view downstream along Bamban River, Tarlac, showing breached levees and lahar and alluvial sediments spreading over farmland and villages.
U.S. Geological Survey Photograph taken on July 16, 1991 by Willie Scott.
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Pinatubo91_children_on_roof_in_bamban_10-12-91.jpg
Children on roof of school in Bamban, Tarlac. Schoolhouse was buried by lahars of Sacobia and Marimla Rivers, tributaries of the Bamban River.
U.S. Geological Survey Photograph taken on October 12, 1991, by Chris Newhall.
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Pinatubo92_pinatubo_caldera_crater_lake_05-18-92.jpg
Aerial view west across Pinatubo caldera showing fumaroles and crater lake.
U.S. Geological Survey Photograph taken on May 18, 1992, by Willie Scott.
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