Data provided by National Oceanic and Atmospheric Administration
The Knudsen 2620 acquired sub-bottom profiles continuously throughout the cruise. The Knudsen was operated in 3.5 kHz Chirp mode, emitting a 1.5 kHz to 5 kHz (3 kHz bandwidth centered on 3.5 kHz) pulse from transducers mounted in the pod beneath the hull. A record window of 200 meters and assumed sound velocity of 1500 m/s remained constant through the cruise. The resulting data records were 267 msec long, with a sample interval 0.16667 msec (6 kHz). The ping rate varied over the course of the cruise. For most of the first two weeks, the ping rate was approximately 5 seconds. On or about June 23, the ping rate was increased to approximately 2 seconds.
About this Dataset
Updated: 2024-02-22
Metadata Last Updated:
2025-11-19T16:19:18.352Z
Date Created:
N/A
Data Provided by:
Dataset Owner:
N/A
| Title | MGL1109 Chirp - US Extended Continental Shelf Project: Gulf of Alaska CHIRP High-Resolution Seismic Profile Data |
|---|---|
| Description | The Knudsen 2620 acquired sub-bottom profiles continuously throughout the cruise. The Knudsen was operated in 3.5 kHz Chirp mode, emitting a 1.5 kHz to 5 kHz (3 kHz bandwidth centered on 3.5 kHz) pulse from transducers mounted in the pod beneath the hull. A record window of 200 meters and assumed sound velocity of 1500 m/s remained constant through the cruise. The resulting data records were 267 msec long, with a sample interval 0.16667 msec (6 kHz). The ping rate varied over the course of the cruise. For most of the first two weeks, the ping rate was approximately 5 seconds. On or about June 23, the ping rate was increased to approximately 2 seconds. |
| Modified | 2025-11-19T16:19:18.352Z |
| Publisher Name | N/A |
| Contact | N/A |
| Keywords | Seismic:Active:Subbottom , Seismic:Reflection , Other , DigitalSeg:DigitallyAcquired , [1137] Gulf of Alaska , [1139] Aja Fracture Zone , [1141] Surveyor Fan , [1140] Kodiak Bowie Seamount Corridor , [1138] Baranof Fan , DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce , UNH/CCOM-JHC > Center for Coastal and Ocean Mapping - Joint Hydrographic Center, University of New Hampshire , DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS , DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL , DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING |
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