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Displaying items by tag: Phytoplankton

PhD student Catherine Jordan will bring her research on phytoplankton blooms to the third annual Soapbox Science even in Galway tomorrow afternoon (Saturday 29 June).

She will be among 12 female scientists standing on their soapboxes to talk about their groundbreaking research in the areas of science, technology, engineering, mathematics and medicine at the city’s Spanish Arch from noon to 3pm.

Jordan, a PhD candidate through the Marine Institute’s Cullen Fellowship Programme and NUI Galway, will discuss her research on using satellite technology to observe and identify phytoplankton blooms in North-East Atlantic waters.

“When conditions are right, phytoplankton appear in high numbers and produce green and dark red hues in the water and are known as ‘algal blooms’,” she explains.

“As these blooms can sometimes be visible from space, satellites provide a useful tool in monitoring the location and extent of these blooms.

“In most cases phytoplankton blooms are of benefit to the ecosystem, but a small proportion of phytoplankton species produce toxins which may affect other marine life.

“Satellites may be able to assist in providing early wide-scale warnings of the presence of algal blooms, by using ocean colour sensors. A lot of my research focuses on measuring optical properties of light by using different instruments and methods, as well as validating satellite measurements.”

Jordan recently joined the Marine Institute’s annual ocean climate research survey on the RV Celtic Explorer to collect plankton samples and hyperspectral radiometer data as part of her PhD research.

Speaking about the Soapbox Science even, Jordan said: “I am very passionate about my field of science and also promoting how women can work on marine research vessels and spend weeks at sea.

“It is very important to engage the public in learning about marine science in interactive ways in order to explain very complex matters. Soapbox Science is an excellent platform for promoting women in science and encouraging the public to discuss topics they may not have encountered before.”

Soapbox Science Galway began two years ago, and talks this year will cover a diverse range of topics such as enhancing farming using insects, the marvels of human milk, the internet as a force for good, and statistical thinking for real-life questions.

The event will also be held in Dublin and Cork, as well as in several countries around the world including the UK, US, Canada, Australia, Sweden, Germany, Brazil and South Africa.

For the full list of participants and more information about Soapbox Science visit soapboxscience.org

Published in Marine Science

The Star keelboat is a 6.9 metres (23 ft) one-design racing keelboat for two people designed by Francis Sweisguth in 1910.

The Star was an Olympic keelboat class from 1932 through to 2012, the last year keelboats appeared at the Summer Olympics at which Ireland's representatives were Peter O'Leary and David Burrows.

Ireland has performed well in the class internationally thanks to some Olympic campaigns including a bronze medal at the Star World Championships in 2000, won by Mark Mansfield and David O'Brien.

The boat is sloop-rigged, with a mainsail larger in proportional size than any other boat of its length. Unlike most modern racing boats, it does not use a spinnaker when sailing downwind. Instead, when running downwind a whisker pole is used to hold the jib out to windward for correct wind flow.

Early Stars were built from wood, but modern boats are of fibreglass and carbon construction.

The boat must weigh at least 671 kg (1,479 lb) with a maximum total sail area of 26.5 m2 (285 sq ft).

The Star class pioneered an unusual circular boom vang track, which allows the vang to effectively hold the boom down even when the boom is turned far outboard on a downwind run.

Another notable aspect of Star sailing is the extreme hiking position adopted by the crew and at times the helmsman, who normally use a harness to help hang low off the windward side of the boat with only their lower legs inside.

At A Glance – Star Specifications

Designer Francis Sweisguth
Year 1910
Crew 2 (Skipper + Crew)
S + 1.5 C ≤ 250 kg (550 lb)[1]
Draft 1.016 m (3 ft 4 in)
Hull Type keelboat
Hull weight ≥ 671 kg (1,479 lb)
(including keel)
LOA 6.922 m (22 ft 9 in)
LWL 4.724 m (15 ft 6 in)
Beam 1.734 m (5 ft 8 in) at deck
1.372 m (4 ft 6 in) at chine
Hull appendages
Keel/board type bulb keel
401.5 ± 7 kg (885 ± 15 lb)
Rig
Rig type sloop
Mast length 9.652 m (31 ft 8 in)
Sails
Mainsail area 20.5 m2 (221 sq ft)
Jib/genoa area  6.0 m2 (65 sq ft)
Upwind sail area ≤ 26.5 m2 (285 sq ft)

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