Tag: SC13

RAS and PPS at Hulk

This remote fluid access (RAS) and DNA sampler was deployed at the massive black smoker edifice called Hulk in the Main Endeavour Hydrothermal Field. The green lasers are 10 cm apart.

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Creatures of the Deep

This movie highlights some of the remarkable animals that thrive deep beneath the oceans surface in the absence of sunlight and in waters that are at near freezing temperatures. The move was produced by Boston University undergraduate student, Caitlin Russell as part of the University of Washington's School of Oceanography student at-sea program. This effort was part of the VISIONS'13 program to install the US's first underwater cabled observatory.

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ROPOS Taking ROCLS and Cable Drum to Seafloor

During ROPOS Dive 1611, the ROV latched into the remotely operated cable laying system (ROCLS) hosting a drum with an RSN extension cable ready to be installed. In concert, these two systems successfully installed >22,000 m of extension cables on the seafloor during the UW-OOI-NSF VISIONS'13 expedition.

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ROPOS and Taking Tool Basket to the Seafloor

With ROPOS's heavy lift capabilities and industry style latch system on its underbelly, it is able to safely take heavy loads to the seafloor. During the VISIONS'13 Expedition, ROPOS takes two short-period seismometers to the seafloor in the tool basket at the start of Dive 1617 to the caldera of Axial Seamount.

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ROPOS Installing Secondary Node

During the UW-OOI-NSF VISIONS'13 Expedition, the remotely operated vehicle ROPOS installed three medium power J-Boxes (secondary nodes) utilizing their special 4,000 lb heavy lift capabilities. ROPOS took this RSN J-Box down on dive R1601. The broad feet on the J-Box are used for installation in heavily sedimented areas. This was an unusually calm day at sea in the NE Pacific.

Photo Credit: Mitch Elend, University of Washington.

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Cable Termination Assembly

A cable termination assembly (CTA) is removed from the cable drum that was just released from the Remotely Operated Cable Laying System (ROCLS) during the ROV ROPOS dive 1599. The CTA, held in ROPOS's manipulator, provides a termination/connection between wetmate connectors and extension cables. An RSN wetmate hybrid connector (RS03W3-PA) is shown in the background, still attached to an extension cable that is figure 8'ed on the front horns of the cable drum.

Photo credit: NSF-OOI/UW/CSSF.

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A Hybrid Wetmate Connector on the HD Camera

An ODI hybrid wet-mate connector provides > 1 Gbs video transmission capabilities and power to the RSN-OOI-NSF high definition camera that was deployed during the VISIONS'13 Expedition. The wetmate connectors allow an ROV to connect and disconnect infrastructure underwater without having to recover the equipment. The camera shown here is at a water depth of ~ 5000 ft at the summit of Axial Seamount.

The orange extension cable (on right of camera) was powered up by the ROV ROPOS through an ~ 4 km extension cable that traverses eastward across the caldera at Axial Seamount. Live video video from the HD camera was streamed over the Internet for several hours during testing of the camera. In 2014, the extension cable will be connected to Primary Node 3B for 365 day access. The camera was installed at the base of the hydrothermal chimney called Mushroom in the ASHES hydrothermal field.

Photo credit: NSF-OOI/UW/CSSF.

 

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ASHES Medium Powered Junction Box

This medium powered junction-box (MJ03B) in the ASHES hydrothermal field was installed during the VISIONS'13 expedition. The titanium cylinder inside the frame hosts the power converters, data ports, and communication capabilities to shore via the Primary Nodes.

A 4.3 km cable extends from this J-Box across the caldera to PN3B, where it awaits future connection. MJ03B was installed as a 'subnet' during VISIONS'13 – two short-period seismometers are now connected to it via a 50 m and 1.2 km extension cable, respectively. A also host a cabled 3D thermistor array (a test instrument is shown in this image – triangular shaped frame with blue cables) was also deployed for testing. MJ03B, and all cables and connected sensors were fully tested during VISIONS'13, and are fully functional. During the several hour test period, several earthquakes were detected. 

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