Our student Steve Carr has just published his second paper, and it’s a deep one—literally. Using a novel seismic denoising method called CRISP-RF (Clean Receiver function Imaging with Sparse Radon Filters), Steve reveals new insights into Earth’s interior. His work identifies sharp velocity drops both above and below the mantle transition zone, at depths ranging from ∼290–390 km and ∼800–1400 km. The pattern? Blobby, disconnected regions likely caused by hydrated material sinking deep into otherwise dry mantle. Steve is currently gaining field experience in Houston, TX, and will return soon to finish his PhD.
📄 Read the full paper: ScienceDirect link
Waves and Water: Carr’s Second Strike in Seismology