This data set was collected from a single CTD cast during a survey of the Jurassic Quiet Zone area in the western Pacific Ocean, as part of Sikuliaq cruise SKQ202418S in late 2024 and early 2025. The cast was done at coordinates 164.47317E, 9.28467N and reached ~935 m in depth. The processed data file is in ASCII CSV format. The data set was acquired as part of the project called Resolving the Origin of the Jurassic Quiet Zone. Funding was provided by NSF awards OCE22-21814 and OCE22-21815.

This data set was collected from a single CTD cast during a survey of the Jurassic Quiet Zone area in the western Pacific Ocean, as part of Sikuliaq cruise SKQ202418S in late 2024 and early 2025. The CTD cast was done at coordinates 164.47317E, 9.28467N and reached ~935 m depth. The raw data file is in .hex format and is accompanied by its xmlcon configuration file. These files can be read by Sea-Bird Scientific software to retrieve raw measurements and calibration coefficients. The data set was acquired as part of the project called Resolving the Origin of the Jurassic Quiet Zone. Funding was provided by NSF awards OCE22-21814 and OCE22-21815.

This data set was collected using Sippican T-7 Expendable Bathythermograph (XBT) probes during a survey of the Jurassic Quiet Zone area in the western Pacific Ocean, as part of Sikuliaq cruise SKQ202418S in late 2024 and early 2025. XBTs were deployed approximately twice per day during seismic acquisition. These raw data files are in ASCII .EDF exportable data format. The file headers contain coordinates of deployment. Most casts nominally reached ~700m depth. The data set was acquired as part of the project called Resolving the Origin of the Jurassic Quiet Zone. Funding was provided by NSF awards OCE22-21814 and OCE22-21815.

This MCS data set was acquired with the Scripps Institution of Oceanography portable multi-channel seismic system during a survey of the Jurassic Quiet Zone area in the western Pacific Ocean, during Sikuliaq cruise SKQ202418S in late 2024 and early 2025. The data set contains the shot logs in ASCII format. These were pulled directly from the ship's Seapath system and are not corrected for layback of the airguns. Assuming perfect towing, the center of source is ~55m back from these coordinates (the ship's (0,0,0) reference origin), and a few m offset laterally. Several different towing configurations were used so shot location varied between lines, but these corrections are small enough compared to the other length scales that they do not much matter for processing. Detailed geometry information about the seismic survey is in the cruise report, allowing shot coordinates to be corrected accordingly, if required. The data set was acquired as part of the project called Resolving the Origin of the Jurassic Quiet Zone. Funding was provided by NSF awards OCE22-21814 and OCE22-21815.

This MCS data set was acquired with the Scripps Institution of Oceanography portable multi-channel seismic system during a survey of the Jurassic Quiet Zone area in the western Pacific Ocean, during Sikuliaq cruise SKQ202418S in late 2024 and early 2025. The data set contains the time-migrated seismic data resulting from preliminary processing. The data files are in SEG-Y format. The CDP coordinates in the headers are in UTM-57N, though parts of the survey are outside the nominal limits of that UTM zone. The airgun array was towed 25 m from the stern of the ship, and the first channel of the streamer was ~185 m offset from the airgun array. More detailed geometry information is in the cruise report. The data set was acquired as part of the project called Resolving the Origin of the Jurassic Quiet Zone. Funding was provided by NSF awards OCE22-21814 and OCE22-21815.

This MCS data set was acquired with the Scripps Institution of Oceanography portable multi-channel seismic system during a survey of the Jurassic Quiet Zone area in the western Pacific Ocean, during Sikuliaq cruise SKQ202418S in late 2024 and early 2025. The data set contains the raw MCS field shot data files, in SEG-Y format. The "source" coordinates in the headers were pulled directly from the ship navigation and so are referenced to the ship coordinate system, not to airgun or streamer location. The airgun array was towed 25 m from the stern of the ship, and the first channel of the streamer was ~185 m offset from the airgun array. More detailed geometry information is in the cruise report. The navigation coordinates in the headers are in UTM-57N, though parts of the survey are outside the nominal limits of that UTM zone. The data set was acquired as part of the project called Resolving the Origin of the Jurassic Quiet Zone. Funding was provided by NSF awards OCE22-21814 and OCE22-21815.

This magnetics data set was collected using a SeaSPY2 magnetometer during a survey of the Jurassic Quiet Zone area in the western Pacific Ocean, as part of Sikuliaq cruise SKQ202418S in late 2024 and early 2025. These magnetometer data files are in ASCII format with the following columns: year, month, day, hour, minute, second, longitude (decimal degrees), latitude (decimal degrees), measured total magnetic field in nT, magnetic anomaly corrected using the 14th generation IGRF release in nT, diurnal corrected anomaly in nT. Navigation information was derived from the R/V Sikuliaq Seapath navigation system, and locations were corrected for the position of the magnetometer (towed 325 m behind the ship). There are gaps in the data for periods when the magnetometer was not deployed. The diurnal correction was applied using the Pohnpei base station and scaled between Guam and Honolulu base stations. The data set was acquired as part of the project called Resolving the Origin of the Jurassic Quiet Zone. Funding was provided by NSF awards OCE22-21814 and OCE22-21815.

This data set was acquired with the Scripps Institution of Oceanography portable multi-channel seismic system during a survey of Walvis Ridge and Valdivia Bank in the South Atlantic Ocean, as part of R/V Thomas G. Thompson cruise TN373 in late 2019. The data files presented here are in SEG-D format and contain the raw field multi-channel seismic reflection shot data that has not been processed. The files are served as tar bundles, one tar bundle per seismic line. The purpose of cruise TN373 was to collect mutli-channel seismic reflection, magnetic, gravity, and bathymetric data over portions of Walvis Ridge as part of a site survey for International Ocean Discovery Program Expedition 391 and to study the formation of this hotspot trail. Owing to environmental regulations, however, seismic data were collected on one cruise (TN373) and multibeam echo-sounder data, magnetic data, and other geophysical data were collected on the subsequent cruise, TN374. Cruise TN373 started from Montevideo, Uruguay on 5 November 2019 and crossed the south Atlantic to Walvis Ridge. The Scripps portable seismic system used a 96-channel streamer with 2 small G-I airguns as the source. A short 114 km length seismic practice line was shot across southeastern Rio Grande Rise. After arrival in the Walvis Ridge Guyot Province, 13 seismic lines were run over guyots in three survey areas, totaling 717 km of profiles. At Valdivia Bank, an additional 13 seismic lines were run across this plateau feature, totaling 2,229 km of profiles. Altogether, the total number of seismic shots fired was 120,616 and the total length of profiling was 3015 km. Cruise TN373 was finished on 7 December 2019 after arrival at Walvis Bay, Namibia, where technical and science crew changes were made and the seismic gear was removed from the ship. The data set was acquired as part of the project called Tectonic evolution of the Rio Grande Rise - Walvis Ridge hotspot twins inferred from magnetic anomaly and seismic reflection data. Funding was provided by NSF award OCE18-32197.

This data set was acquired with the Scripps Institution of Oceanography portable multi-channel seismic system during a survey of Walvis Ridge and Valdivia Bank in the South Atlantic Ocean, as part of R/V Thomas G. Thompson cruise TN373 in late 2019. The processed seismic data files presented here are in SEG-Y format. The data were processed onshore using GeoEast software with a seismic processing flow consisting of noise attenuation, velocity analysis and NMO stacking. The data were migrated using finite-difference post-stack time migration. The purpose of cruise TN373 was to collect mutli-channel seismic reflection, magnetic, gravity, and bathymetric data over portions of Walvis Ridge as part of a site survey for International Ocean Discovery Program Expedition 391 and to study the formation of this hotspot trail. Owing to environmental regulations, however, seismic data were collected on one cruise (TN373) and multibeam echo-sounder data, magnetic data, and other geophysical data were collected on the subsequent cruise, TN374. Cruise TN373 started from Montevideo, Uruguay on 5 November 2019 and crossed the south Atlantic to Walvis Ridge. The Scripps portable seismic system used a 96-channel streamer with 2 small G-I airguns as the source. A short 114 km length seismic practice line was shot across southeastern Rio Grande Rise. After arrival in the Walvis Ridge Guyot Province, 13 seismic lines were run over guyots in three survey areas, totaling 717 km of profiles. At Valdivia Bank, an additional 13 seismic lines were run across this plateau feature, totaling 2,229 km of profiles. Altogether, the total number of seismic shots fired was 120,616 and the total length of profiling was 3015 km. Cruise TN373 was finished on 7 December 2019 after arrival at Walvis Bay, Namibia, where technical and science crew changes were made and the seismic gear was removed from the ship. The data set was acquired as part of the project called Tectonic evolution of the Rio Grande Rise - Walvis Ridge hotspot twins inferred from magnetic anomaly and seismic reflection data. Funding was provided by NSF award OCE18-32197.

This data set was acquired with the Scripps Institution of Oceanography portable multi-channel seismic system during a survey of Walvis Ridge and Valdivia Bank in the South Atlantic Ocean, as part of R/V Thomas G. Thompson cruise TN373 in late 2019. The data files presented here are in U.K.O.O.A. P1/90 format and contain Seismic Navigation data that was processed after acquisition. The purpose of cruise TN373 was to collect mutli-channel seismic reflection, magnetic, gravity, and bathymetric data over portions of Walvis Ridge as part of a site survey for International Ocean Discovery Program Expedition 391 and to study the formation of this hotspot trail. Owing to environmental regulations, however, seismic data were collected on one cruise (TN373) and multibeam echo-sounder data, magnetic data, and other geophysical data were collected on the subsequent cruise, TN374. Cruise TN373 started from Montevideo, Uruguay on 5 November 2019 and crossed the south Atlantic to Walvis Ridge. The Scripps portable seismic system used a 96-channel streamer with 2 small G-I airguns as the source. A short 114 km length seismic practice line was shot across southeastern Rio Grande Rise. After arrival in the Walvis Ridge Guyot Province, 13 seismic lines were run over guyots in three survey areas, totaling 717 km of profiles. At Valdivia Bank, an additional 13 seismic lines were run across this plateau feature, totaling 2,229 km of profiles. Altogether, the total number of seismic shots fired was 120,616 and the total length of profiling was 3015 km. Cruise TN373 was finished on 7 December 2019 after arrival at Walvis Bay, Namibia, where technical and science crew changes were made and the seismic gear was removed from the ship. The data set was acquired as part of the project called Tectonic evolution of the Rio Grande Rise - Walvis Ridge hotspot twins inferred from magnetic anomaly and seismic reflection data. Funding was provided by NSF award OCE18-32197.