Monthly Archives: April 2016

Dive 09: Young Lava Flows

ROV Deep Discoverer has been deployed and is descending to the seafloor at a depth of ~4066m to start today’s dive. Dive 09 will explore a series of recent (2013-2015) lava flows and search for hydrothermal vents or diffuse flow … Continue reading

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Overnight Mapping

ROV Deep Discoverer is secure on deck following a successful dive today at NW Guam Seamount. The ship is currently conducting overnight mapping operations, and will dive tomorrow at a site where recent lava flows occurred and search for hydrothermal … Continue reading

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Dive 07: NW Guam Seamount

NOAA Ship Okeanos Explorer is on station and preparing to deploy ROV Deep Discoverer for Dive 08 at Northwest Guam Seamount. This extinct arc volcano is the last unexplored large arc seamount in the southern Marianas. Its summit region may … Continue reading

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Dive 07: Fina Nagu Caldera A

ROV Deep Discoverer is on the seafloor at ~2,290m exploring  Fina Nagu Caldera A – the youngest caldera in the Fina Nagu volcanic chain. We are currently investigating an extinct hydrothermal vent site, documenting fascinating chimney structures and the biology … Continue reading

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Dive 06: Fina Nagu Caldera C

ROV Deep Discoverer is in the water and descending to the seafloor for Dive 06 at Fina Nagu Caldera C. This dive will begin at ~2,690m and traverse up a ridge on the east caldera wall to characterize the geologic … Continue reading

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Mapping Monument Vent Sites

ROV Deep Discoverer is secure on deck following a successful dive today at Fina Nagu Caldera D. We are conducting overnight mapping operations overtop of Toto, Pika, Archaean and South Backarc – four of the hydrothermal vents that compose the … Continue reading

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Dive 05: Fina Nagu Caldera D

ROV Deep Discoverer is in the water and descending to the seafloor at ~3030m for Dive 05 at Fina Nagu Caldera D. Today’s dive will study one of the southern caldera’s of the Fina Nagu volcanic chain to better understand … Continue reading

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Mapping Transit to Fina Nagu

The ship is underway transiting to Fina Nagu for Dive 05 of the expedition. We will conduct transit mapping overnight and arrive at Fina Nagu Caldera C at 0400 Fiji time tomorrow morning to conduct CTD Pogo operations and search … Continue reading

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ROV Safely Recovered; Repairing the Sheave

Following a very long day and night, the ROV is safely on deck after a slow ascent from Dive 04 at “Enigma Seamount”. During yesterday’s recovery, a mechanical problem occurred with the  sheave. Today’s ROV dive is cancelled, and the … Continue reading

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Dive 04 at “Enigma Seamount”

ROV Deep Discoverer is in the water and descending to ~3,800m for Dive 04 at “Enigma Seamount”. Today’s dive is located within the Marianas Trench Marine National Monument and will explore a seamount that may lie on a boundary between … Continue reading

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