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Profile Measurements and Data From the 2011 Optics, Acoustics, and Stress In Situ (OASIS) Project at the Martha's Vineyard Coastal Observatory

Time Line Table

Title Page Acknowledgments List of Figures Conversion Factors Abbreviations and Symbols Abstract Introduction Site Description Field Program Time Line Table Bottom Sediment Sample Table Suspended Sediment Sample Table Mooring Log Table Instrumentation Results Digital Data File Table References Cited Appendix 1 Appendix 2 Appendix 3 Appendix 4

Table 1. Time line of USGS activities during the 2011 Optics, Acoustics, and Stress In Situ (OASIS) experiment. [Description of Instrumentation and Abbreviations and Symbols] Date Time (UTC) Event Profiling arm tripod (USGS mooring 910) 17-Sept-2011 14:05:30 Tripod on bottom, arm in up position. Deployed from the R/V Connecticut. 17-Sept-2011 13:58:00 - 16:30:00 Diving operations from the R/V Connecticut in tripod vicinity. Connected cables and collected diver push cores and water samples. 21-Sept-2011 15:25:00 - 20:25:00 Node shut down, arm in down position. Dive operations from the R/V Tioga in tripod vicinity. Sensors wiped. Sediment core and water samples collected. 27-Sept-2011 14:25:00 - 16:00:00 Node shut down, arm in up position. Dive operations from the R/V Tioga in tripod vicinity. Sensors wiped and water samples collected. 2-Oct-2011 - 4-Oct-2011   Swell from Hurricane Ophelia. 6-Oct-2011 14:43:00 - 19:52:00 Node shut down, arm in down position. Dive operations from the R/V Tioga in tripod vicinity. Sensors wiped and water samples collected. Underwater video images of tripod by Michael Casso, USGS. Min. arm angle changed from -27.5° to -25.5°. 11-Oct-2011 16:20:00 - 21:15:00 Node shut down, arm in down position. Dive operations from the R/V R&R in tripod vicinity. Sensors wiped and water samples collected. Min. arm angle reduced to -24°. 12-Oct-2011 14:15:00 - 17:30:00 Node shut down, arm in down position. Dive operations from the R/V Tioga in tripod vicinity. Serviced nearby tripod belonging to Norman Farr, WHOI. 13-Oct-2011 05:00:00 MVCO ADCP failed. 14-Oct-2011 04:00:00 Tripod began to pitch, roll, and rotate. 15-Oct-2011 04:00:00 Tripod stable again. Rotated a total of 45° during event. 20-Oct-2011 06:45:00 Pitch and roll record suggests tripod beginning to tip on the order of 20° - 30° but not capsizing. 20-Oct-2011 17:17:00 Arm detached from tripod. 21-Oct-2011 00:54:00 Tripod capsized. 23-Oct-2011 15:00:00 - 19:40:00 Divers from the R/V Connecticut in water for recovery operations and collect sediment core and water samples. 23-Oct-2011 20:10:00 Tripod off bottom. Recovered from the R/V Connecticut.   Monopod (USGS mooring 911) 17-Sept-2011 14:32:00 Monopod on bottom. Deployed from the R/V Connecticut. 17-Sept-2011 15:25:00 - 20:25:00 Diving operations in monopod vicinity. Float too buoyant on monopod ground line. Ground line off bottom. 21-Sept-2011 16:00:00 - 16:30:00 Diving operations in monopod vicinity. Replaced 14-inch float with 8-inch float and reset ground line to north. 02-Oct-2011 17:00:00 Monopod begins to have significant tilt and roll (> 15° each at times). May influence data quality. 23-Oct-2011 - 4-Oct-2011 15:00:00 - 19:40:00 Divers in water for recovery operations. 23-Oct-2011 19:52:00 Monopod off bottom. Recovered from the R/V Connecticut.