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Posts Tagged "Kermadec Trench"

Expeditions

Kermadec Trench: Snubs and Hags

After a day or so of steaming towards East Cape, we decided that the weather was still too bad to launch any of the gear safely, so we plodded on down to Poverty Bay. This was a good decision. The seas were calm and the sun was out – perfect lander weather. We deployed our [...]

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Expeditions

Kermadec Trench: A Turn for the Worse

Seafarers have a strange way of describing things sometimes. For example, 1st officer Steve described today as being a “funny old day” and Captain Lindsey described the weather as “freshening.” This translates to being an absolute disaster of a day, mostly due to the fact the weather turned absolutely terrible. At first light we brought [...]

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Expeditions

Kermadec Trench: Like pieces of a jigsaw puzzle…

A specimen photograph of Coryphaenoides yaquinae. If confirmed with more detailed study at Te Papa, this will be the first proven record in New Zealand waters. Photo credit: NIWA/University of Aberdeen.

Today saw retrieval of the two landers and fish trap from depths of 5000-5500m. This is still on the abyssal plain between the Kermadec Ridge and Kermadec Trench, but is starting to become a steeper slope as depths drop away towards the Trench. The hadal lander was the first aboard, and with it came video [...]

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Expeditions

Kermadec Trench: The deep-water womble

1st officer Steve Bailey (L) and Alan Jamieson (R) showing off the large cusk eels caught in the new legendary ‘big trap’ (back left). Photo courtesy of NIWA/University of Aberdeen, UK.

Ah, I forgot what a joy it is to be on the Kaharoa, a veritable floating bowl of jokes. It is days like today when all the months of preparation and the long hours on deck really pay off. We brought in all three landers this morning; the abyssal lander from 4000 meters, the fish [...]

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Expeditions

Kermadec Trench: The Cosmopolitan Rattail

Video frame grab of Coryphaenoides at 3500m. Credit: NIWA/University of Aberdeen, UK

Overnight, we sampled depths between 3000 and 3500 meters along a gradual slope. Both landers worked well, and provided some excellent footage of fish attracted to the bait. The bait, by the way, is jack mackerel, an oily fish which creates a good “odor plume” (basically a strong smell) that is very effective for the [...]

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Expeditions

Kermadec Trench: Boring eels

Another early start today.  I released the fish trap first and the ascent and location was good.  We scrambled the thing on deck to find it had actually worked.  We caught a sleeper shark (Somniosidae antarcticus), a subnose eel (Simenchelys parasitica) and a cusk eel (Spectrunculus spp.).  Amongst all that were dozens of amphipods, most [...]

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Expeditions

Kermadec Trench: Scuttling your Assets

Well, as promised, as soon as we get clear of the north island and over the trench, the sea subsided and the day turned out to be a scorcher. So much so I am now red, partly because I always forget how intense the sun is down this way and partly because we ended up [...]

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Expeditions

Previous research in the Kermadec Trench

Map of the area, showing the sampling locations of previous expeditions

Sampling in the Trench dates back to two global expeditions of discovery: the Danish research vessel Galathea II in 1952, and the Russian Vityaz in 1958. These vessels carried out 13 shots, trawling as deep as 9900m. There followed a period of several decades where the world’s trenches were almost “out of sight, out of [...]

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Expeditions

Kermadec Trench: Cook, Kermadec and Kaharoa

The RV Kaharoa.  Somewhere off Cape Kidnappers.

Greetings from the RV Kaharoa, voyage KAH 1301. There is not much to report scientifically today as we are still transiting to the first station.  We left Wellington Harbour yesterday and sailed through the Cook Straits and up the east coast of New Zealand’s North Island. We expect to get to the Trench soon. Most [...]

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