- Contents
- Title page
- Publisher's notes
- Abstract
- Schedule for Expedition 323
- Introduction
- Background
- Scientific objectives
- Coring and drilling strategy
- Logging/downhole measurements
strategy
- Research plan proposals (samples and data sharing)
- Acknowledgments
- References
- Tables
- Figures
- Site summaries
- Appendix figures
- AF1. Specific navigation map, Site BOW-12B.
- AF2. Close-up navigation map, Site BOW-12B.
- AF3. Swath bathymetric map, Site BOW-12B.
- AF4. Seismic profile, Site BOW-12B.
- AF5. Close-up seismic profile, Site BOW-12B.
- AF6. Seismic profile, Site BOW-12B.
- AF7. Seismic line, Site BOW-12B.
- AF8. 3.5 kHz subbottom profile survey, Site BOW-12B.
- AF9. Specific navigation map, Site BOW-14B.
- AF10. Close-up navigation map, Site BOW-14B.
- AF11. Swath bathymetric map, Site BOW-14B.
- AF12. 3.5 kHz subbottom profile survey, Site BOW-14B.
- AF13. Seismic profile, Site BOW-14B.
- AF14. Close-up seismic profile, Site BOW-14B.
- AF15. Seismic profile, Site BOW-14B.
- AF16. Close-up seismic profile, Site BOW-14B.
- AF17. Specific navigation map, Site BOW-15A.
- AF18. Close-up navigation map, Site BOW-15A.
- AF19. Seismic profile, Site BOW-15A.
- AF20. Close-up seismic profile, Site BOW-15A.
- AF21. Seismic profile, Site BOW-15A.
- AF22. Close-up seismic profile, Site BOW-15A.
- AF23. 3.5 kHz subbottom profile survey, Site BOW-15A.
- AF24. Swath bathymetric map, Site BOW-15A.
- AF25. Regional overview map, Sites GAT-3C and GAT-4C.
- AF26. Specific navigation map, Site GAT-4C.
- AF27. Close-up navigation map, Site GAT-4C.
- AF28. Seismic profile, Site GAT-4C.
- AF29. Close-up seismic profile, Site GAT-4C.
- AF30. Seismic profile, Site GAT-4C.
- AF31. Close-up seismic profile, Site GAT-4C.
- AF32. 3.5 kHz subbottom profile survey, Site GAT-4C.
- AF33. Swath bathymetric map, Site GAT-4C.
- AF34. Specific navigation map, Site GAT-3C.
- AF35. Close-up navigation map, Site GAT-3C.
- AF36. Seismic profile, Site GAT-3C.
- AF37. Seismic profile, Site GAT-3C.
- AF38. Close-up seismic profile, Site GAT-3C.
- AF39. Close-up seismic profile, Site GAT-3C.
- AF40. 3.5 kHz subbottom profile survey, Site GAT-3C.
- AF41. Swath bathymetric map, Site GAT-3C.
- AF42. Regional overview map, Site KST-1B.
- AF43. Seismic profile, Site KST-1B.
- AF44. Close-up seismic profile, Site KST-1B.
- AF45. Regional overview map, Sites SHR-3B and SHR-1B.
- AF46. Map of study area, Site SHR-1B.
- AF47. Map of study area, Site SHR-3B.
- AF48. Seismic profile, Site SHR-3B.
- AF49. Close-up seismic profile, Site SHR-3B.
- AF50. Seismic profile, Site SHR-1B.
- AF51. Close-up seismic profile, Site SHR-1B.
- AF52. Single-channel seismic profile, Sites UMK-3B and UMK-4D.
- AF53. Close-up seismic profile, Site UMK-4D.
- AF54. Single-channel seismic profile, Site UMK-4D.
- AF55. Track chart, Sites UMK-4D and UMK-3B.
- AF56. 3.5 kHz subbottom profile survey, Sites UMK-4D and UMK-3B.
- AF57. Swath bathymetric map, Sites UMK-4D and UMK-3B.
- AF58. Single-channel seismic profile, Site UMK-3B.
- AF59. Close-up seismic profile, Site UMK-3B.
- AF60. Track chart, Site NAV-1B.
- AF61. Seismic profile of CDP1139.
- AF62. Seismic profile of 1550Z.
- AF63. Minisparker profile.
- Expedition scientists and scientific participants
- PDF file
- Errata
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doi:10.2204/iodp.sp.323.2009
Site summaries (continued)
Site BOW-15A (Bowers Ridge): middle Pliocene
Priority:
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Primary
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Position:
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54°49.7′N, 176°55.0′E (WGS 84)
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Water depth (m)
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837
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Target drilling depth (mbsf):
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165
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Approved maximum penetration (mbsf):
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165
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Previous drilling in area:
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DSDP Site 188
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Comments:
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Site location and depth of penetration approved by EPSP in December 2005
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Survey coverage (track map, seismic profile); sediment cores:
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R/V Hakuhou-maru Cruise KH99-3 Leg 3 (1999):
• Track map (Figs. AF17, AF18)
• MCS profile: Shotpoint 410 on Line Stk4-1 (N–S) (Figs. AF19, AF20)
• Crossing Line Stk4-3 (W–E) (Figs. AF21, AF22)
• Subbottom profile, 3.5 kHz: Line Stk4-1 (W–E) (Fig. AF23)
• Swath bathymetry: Line Stk4-1 (N–S) and Stk4-3 (W–E) (Fig. AF24)
• Piston core (9 m)
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Objective (see text for complete details):
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Provide high-resolution records from the shallowest part of vertical depth transect in the south of the Bering Sea; will be used to evaluate vertical water mass gradients when compared to other sites.
Useful in monitoring the exchange of North Pacific and Bering Sea water at shallower depths from the middle Pliocene through the Pleistocene.
Reconstruct Pliocene–Pleistocene high-resolution paleoceanography and investigate the Bering/Arctic Gateway history.
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Drilling/coring program:
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Triple APC in Holes A, B, and C: APC with core orientation to 165 mbsf and in Hole D to 25 mbsf
Temperature measurements: 3 APCT-3
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Downhole logging program:
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No wire-logging currently planned for this site because of shallow penetration
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Anticipated lithology:
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Hemipelagic silty clay with siliceous and calcareous microfossils
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