Skip to main content

IODP Expedition 390C

South Atlantic Transect Reentry Systems


Daily Science Report for 21 October 2020

Location: In transit to Site U1556

Science Update: The ship transited 267 nmi for a total of 1880 nmi out of the 3608 nmi to Site U1556 (likely to be proposed Site SATL-53B) in the South Atlantic. The JR crossed the equator at ~1040 h. Equator crossing certificates signed by the Captain were given to JRSO and Siem Offshore personnel who had not crossed before. JRSO staff addressed a minor issue with the Section Half Multisensor Logger (SHMSL).


Daily Science Report for 20 October 2020

Location: In transit to Site U1556

Science Update: The ship transited 280 nmi for a total of 1613 nmi out of the 3608 nmi to Site U1556 (likely to be proposed Site SATL-53B) in the South Atlantic. Imaging specialist Sarah Kachovich shared results from the Section Half Imaging Logger (SHIL) calibration testing she has been working on.


Daily Science Report for 19 October 2020

Location: In transit to Site U1556

Science Update: The ship transited 303 nmi for a total of 1333 nmi out of the 3608 nmi to Site U1556 (likely to be proposed Site SATL-53B) in the South Atlantic. The towed magnetometer was deployed after the JR entered international waters. JRSO staff participated in a lifeboat drill.


Daily Science Report for 18 October 2020

Location: In transit to Site U1556

Science Update: The ship transited 300 nmi for a total of 1030 nmi out of the 3608 nmi to Site U1556 (likely to be proposed Site SATL-53B) in the South Atlantic. JRSO staff enjoyed a lunchtime barbeque on deck, put on by Entier personnel.


Daily Science Report for 17 October 2020

Location: In transit to Site U1556

Science Update: The ship transited 310 nmi for a total of 730 nmi out of the 3608 nmi to Site U1556 (likely to be proposed Site SATL-53B) in the South Atlantic. Schlumberger Logging Engineer Clay Furman began a series of electrical engineering workshops for staff. The vibration isolated television (VIT) system was powered up and tested for use during reentry system installation.


Daily Science Report for 16 October 2020

Location: In transit to Site U1556

Science Update: The ship transited 306 nmi at an average speed of 12.8 kt for a total of 420 nmi out of the 3608 nmi to Site U1556 (likely to be proposed Site SATL-53B) in the South Atlantic. Troubleshooting of Section Half Imaging Logger (SHIL) heating and calibration issues continues.


Daily Science Report for 15 October 2020

Location: In transit to Site U1556

Science Update: The JR arrived and anchored in Las Palmas at 2306 h on 14 October. Refueling started at first light today, with the ship receiving 1113.6 mt of fuel. While at anchorage, the repaired propulsion motor was recoupled and is now back online. Siem Offshore crew tested and maintained the release hooks of two lifeboats, lowering them to the waterline and recovering them. The ship was underway at 1454 h. COVID-19 risk mitigation policies were lifted upon departure, as it has now been more than 14 d since last exposure. The ship completed 114 nmi of the 3608 nmi transit to Site U1556, which will likely be proposed Site SATL-53B, at a speed of 12.5 kt. The field of the superconducting rock magnetometer was retrapped while at anchorage.

Estimated date of arrival at Site U1556 is 28 October 2020.


Daily Science Report for 14 October 2020

Location: At anchorage in Las Palmas for refueling

Science Update: The ship completed the final 286 nmi of transit (total voyage 2144 nmi) and anchored in Las Palmas at 2306 h. Refueling will begin with first light tomorrow. The stop will also be used to recouple the repaired propulsion motor. JRSO staff spent time reorganizing and updating Confluence laboratory web pages.


Daily Science Report for 13 October 2020

Location: In transit to Las Palmas for refueling

Science Update: The ship transited 299 nmi for a total of 1858 nmi out of the 2190 nmi to Las Palmas. Doris Piñero Lajas, Physical Properties Laboratory technician, finished demonstrations of the track systems and calibration of the Natural Gamma Ray Logger (NGRL). An alignment jig for the magnetic orientation tools has been designed and manufactured.


Daily Science Report for 12 October 2020

Location: In transit to Las Palmas for refueling

Science Update: The ship transited 294 nmi for a total of 1556 nmi out of the 2190 nmi to Las Palmas. Imaging Specialist Sarah Kachovich demonstrated micropaleontology and microscopy techniques. Chemistry Laboratory technician Vincent Percuoco gave an overview of Chemistry Laboratory protocols for squeezing whole-round samples and geochemical analyses. Troubleshooting of the sonar dome continues.


Daily Science Report for 11 October 2020

Location: In transit to Las Palmas for refueling

Science Update: The ship transited 298 nmi for a total of 1265 nmi out of the 2190 nmi to Las Palmas. JRSO staff participated in a bomb search drill conducted by Siem Offshore crew, assisting the crew in searching the ship for fake suspicious devices. Cross-training and laboratory improvement activities continue.

The ship is making good time and is expected to arrive in Las Palmas on 15 October 2020.


Daily Science Report for 10 October 2020

Location: In transit to Las Palmas for refueling

Science Update: The ship transited 283 nmi for a total of 967 nmi out of the 2190 nmi to Las Palmas. Laboratory improvements and JRSO staff laboratory cross-training continues. The Section Half Imaging Logger (SHIL) issue with red and green bands appearing in the core images has been resolved.


Daily Science Report for 9 October 2020

Location: In transit to Las Palmas for refueling

Science Update: Staff and crew enjoyed the sunrise over the cliffs of Dover, in the English Channel. The Dover Strait Shipping Facebook page captured a photo of the JR in transit and posted about the ship and the expedition. We completed 278 nmi for a total of 684 nmi out o the 2190 nmi transit to Las Palmas. JRSO staff began minor modifications to the Core Description Laboratory and conducted cross-training in different laboratories. Drilling equipment is ready for operations.


Daily Science Report for 8 October 2020

Location: In transit to Las Palmas for refueling

Science Update: The ship had a rainy crossing of the North Sea, completing 261 nmi for a total of 406 nmi out of the 2190 nmi transit to Las Palmas. The ship’s clocks were set back 1 h at 0200 h; we are now in time zone UTC + 1 h. The Laboratory Officer and Staff Scientist collected information on immersion suit sizing and availability in order to make recommendations on future purchases and improve scientist safety training. JRSO staff are busy with equipment upgrades and installations. Troubleshooting and testing of the Section Half Image Logger (SHIL) is ongoing.


Daily Science Report for 7 October 2020

Location: In transit to Las Palmas for refueling

Science Update: The pilot boarded the ship at 0838 h and the ship departed Kristiansand, Norway, at 0918 h. The ship will transit to Las Palmas, Gran Canaria, Canary Islands, Spain, for a refueling stop. We completed 145 nmi of the total 2190 nmi transit to Las Palmas. A 1 h stop was made at 1600 h in order to disconnect a propulsion motor for minor repairs and maintenance. Laboratory maintenance and preparation for coring continues. Siem Offshore and JRSO staff conducted an abandon ship drill.

Expected arrival date in Las Palmas is 16 October 2020.


Daily Science Report for 6 October 2020

Location: Berth 21, Port of Kristiansand, Norway

Science Update: Preparations for departure continued with labs and rooms secured for rough seas. Lab and ship maintenance continued, including a project to install new drains in the core splitting room. The Life at Sea presentation was given to staff who have not sailed in the past year. Installation of the Schlumberger wireline winch heat exchanger is complete. New brake bands for the drawworks were received and installation is underway.

Departure is scheduled for 0900 h tomorrow.


Daily Science Report for 5 October 2020

Location: Berth 21, Port of Kristiansand, Norway

Science Update: Expedition 390C started at 0800 h (UTC + 2 h) on 5 October 2020 with the arrival and boarding of 18 JRSO personnel on the JOIDES Resolution (JR). Two additional JRSO staff were already on board. There is no science party on Expedition 390C. All arriving personnel followed preboarding protocols described in the COPE document, including a two-week shelter-in-place period prior to travel, a pre-travel COVID-19 test, and a 5-day quarantine in a hotel in Kristiansand. Personnel passed three additional COVID-19 tests during this quarantine. Shipboard personnel are wearing masks and following social distancing protocols.

The primary goal of Expedition 390C is to install reentry systems at five sites in advance of Expeditions 390 and 393. The sites form a transect starting near the Mid Atlantic Ridge overlying crust ~7 Ma and moving to the west, onto progressively older basalt crust up to ~63 Ma. Expeditions 390 and 393 will drill the crust and overlying sediment to examine how crustal alteration proceeds over time. At each of the five sites designated for Expedition 390C, we will core a single advanced piston corer (APC) hole to basement in order to conduct gas safety monitoring and to determine the exact depth of basement. A second hole will have a reentry system with casing installed. These installations will save operational time during Expeditions 390 and 393.

Installation and testing of the Schlumberger wireline winch heat exchanger is underway. Once completed, the ship will be ready for departure. Date of departure will be determined once the refueling location is confirmed.