|Video||Jules Unlimited (VARA TV) Reef Ball New Zealand Project. (11 Mb, 7:53 Min.) Shot on location in Naiper, New Zealand, it's the story of a Reef Ball being born and deployed. In Dutch and English. Aired in Europe March, 2001.|
New Zealand Scientists Helping
the Reef Ball Foundation
Jonathan Jaffrey BSc, PGCE
Jonathan Jaffrey is EOS's 2001 Royal Society of New Zealand
Teaching Fellow. Jon is a physics specialist who has taught science for over
20 years in secondary schools, both here and in Great Britain. He is well
traveled, and passionate about the environment and SCUBA diving. These
passions led him to choose Reefball
Technology as the focus of his research in EOS. Although Reef Balls have
been used extensively overseas to construct artificial reefs, no research
has been carried out on them in New Zealand. Jon is planning to set up two
patterns of Reef Balls in the Long Bay-Okura Marine Reserve. These will form
the platform for research into colonization rates, and will enhance biotic
mass and biodiversity. Both undergraduate and graduate students have
expressed keen interest in working on the project, which complements ongoing
studies in the reserve.
Dave Allison, 12 Milton Road, Naiper, New Zealand was shipped one Pallet Ball and One Bay Ball mold for Reef Ball New Zealand's use under a Reef Ball Foundation Inc. Services Division authorized contractor agreement on 02/11/2000.
Dr. Shaw Mead
PO Box 151
+64 7 825 0380
"Stuart Cawker" <StuCawkerCapt.Asp@xtra.co.nz>
Coordinates of Reef Balls in New Zealand
The Long Bay reef is located at 360 40’ 52” S, 1740 45’ 14.8” E in 5.5 m at minimum spring low tides. It comprises twelve concrete hemispherical shells made of 60 MPa concrete with microsilca added. There are nine Bay Balls [mass approximately 300 kg, height 0.7 m, base diameter 1.0 m with about 10 piercing] in a N – S line. At the Northern end, there is a Pallet Ball [mass approximately 1200 kg height 0.9 m; base diameter 1.2m with about 15 piercing]. ]. At the Southern end, there are two further Pallet Balls; one with a 30x30 cm slate plate attached to a vertical surface and the other with a plate attached to close the top hole of the unit; i.e. in a horizontal position.
Zag Reef (9 Bay Balls) 360 40’ 52”
S, 1740 45’ 14.8” E
Octagon Reef at 360 40’ 51.1” S, 1740 45’ 19.6” E This also comprises twelve units with four of the smaller Bay Ball units planted as the central core. There are four Bay Balls around the perimeter; a Pallet Ball at the Eastern point of the octagon; and one further Pallet Ball on the Southern margin. There are slate plates attached to a vertical surface of both these Pallet Balls. Another Pallet Ball is placed on the western side. The last Pallet Ball forms a tail to the south since inclement weather prevented it being placed in geometrical perfection. All the spacing is again about 1.0 meter.
Dave Head at email@example.com
Authorized Contractors for the Area
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