Science in Search of Earth's Secrets

What is the JOIDES Resolution?

The JOIDES Resolution (JR) is a research vessel that drills into the ocean floor to collect and study core samples. Scientists use data from the JR to better understand climate change, geology and Earth’s history. It is a part of the International Ocean Discovery Program and is funded by the National Science Foundation.


11 December 2022 – 10 February 2023

About 3,650 years ago, the Greek island of Santorini exploded in a huge volcanic eruption. This eruption was so large that it buried a town on Santorini and may have impacted the Minoan civilization on the island of Crete, 80 miles to the south. There have been more than 100 volcanic eruptions in this area over the past 360,000 years.

Scientists on IODP Expedition 398 will drill into sediments around and on top of the volcanic system that’s deep under the seafloor beneath Santorini and the nearby Christiana and Kolumbo volcanoes. They are hoping to answer how and why these volcanoes erupt and to reconstruct the history of volcanism in this area. These answers could help us better understand other explosive volcanoes around the world that are a threat to the millions of people who live near them.

Read more here!

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Time at Sea: 46 days

Date on Ship: Thursday January 26

Time on Ship: 22:26



Click a Photo to Read Blogs from the Ship’s Crew.
  • A christmas-light covered ball hangs next to decorative 2023 numbers. In the background we see a ship's deck.
    Ringing in a new year and new drilling sites
  • A small island is seen across the water at sunrise. The sky moves from dark blue at the horizon to pink to orange near the clouds.
    One week at sea and we're out of bananas
  • Reaching out to the world from onboard the JR
  • Voices of Expedition 397: Part 2


Click any marker to learn more about our past expeditions! Zoom in on the map for more accurate drill site locations.
JOIDES Resolution