News from the Columbia Climate School

Author: Pratigya Polissar

Pratigya Polissar Avatar

  • Lucky 13 Gets Us 250,000 Years of Sediment

    Lucky 13 Gets Us 250,000 Years of Sediment

    We have been steaming and searching for locations on the seafloor where the sediments are accumulating undisturbed. We tried without luck to take cores at several promising locations, however the cores came up less than perfect. On our thirteenth core attempt of the cruise we got lucky.

  • Drilling Ancient Mud from Seafloor No Easy Task

    Drilling Ancient Mud from Seafloor No Easy Task

    Yesterday we left our first study region with new samples from the seafloor and a healthy respect for the ocean currents that can erode sediment deep in the ocean. The seafloor we surveyed was heavily eroded and we had to look carefully before finding sites that were promising enough to try sampling. Even then we…

  • Through the Looking Glass: Peering Through the Bottom of the Ocean

    Through the Looking Glass: Peering Through the Bottom of the Ocean

    Alice stepped through the mirror to see the world beyond, and we peer through the bottom of the ocean to see what is below. Short pulses of sound from the ship are focused on the seafloor, and we listen to the echo and reverberations that return.

  • Why I Care About the Bottom of the Ocean

    Why I Care About the Bottom of the Ocean

    It is the middle of the night and I am wide awake thinking about the ocean, specifically the bottom of the ocean. Is it rocky? Jumbled? Smooth? Rocky is bad. Jumbled is bad. Smooth is good.

  • Lucky 13 Gets Us 250,000 Years of Sediment

    Lucky 13 Gets Us 250,000 Years of Sediment

    We have been steaming and searching for locations on the seafloor where the sediments are accumulating undisturbed. We tried without luck to take cores at several promising locations, however the cores came up less than perfect. On our thirteenth core attempt of the cruise we got lucky.

  • Drilling Ancient Mud from Seafloor No Easy Task

    Drilling Ancient Mud from Seafloor No Easy Task

    Yesterday we left our first study region with new samples from the seafloor and a healthy respect for the ocean currents that can erode sediment deep in the ocean. The seafloor we surveyed was heavily eroded and we had to look carefully before finding sites that were promising enough to try sampling. Even then we…

  • Through the Looking Glass: Peering Through the Bottom of the Ocean

    Through the Looking Glass: Peering Through the Bottom of the Ocean

    Alice stepped through the mirror to see the world beyond, and we peer through the bottom of the ocean to see what is below. Short pulses of sound from the ship are focused on the seafloor, and we listen to the echo and reverberations that return.

  • Why I Care About the Bottom of the Ocean

    Why I Care About the Bottom of the Ocean

    It is the middle of the night and I am wide awake thinking about the ocean, specifically the bottom of the ocean. Is it rocky? Jumbled? Smooth? Rocky is bad. Jumbled is bad. Smooth is good.