Annual National Seabed
Survey Seminar: 2000
National Seabed Seminar 2000
Agenda of Presentations
Session 1 Discussion
Session 2 Discussion
Session 3 Discussion
90 representatives involved in the Irish marine offshore environment
attended the "National Seabed Seminar, 2000" held at the offices
of the G.S.I. on Friday 17th November. Representatives from the
many different marine sectors attended the all day seminar. The
programme was both comprehensive and wide-ranging with 15 speakers
representing the various sectors who would acquire a direct benefit
from the National Seabed Survey.
display in the entrance area there were numerous Seabed Posters
and some initial bathymetric maps from areas surveyed during the
2000 acquisition season. Organisations
that provided posters for display included UCD, TCD, the Irish Whale
and Dolphin Group (IWDG) and the Coastal Resources Centre (CRC)
attached to UCC.
addition, computer demos of the GSI Seabed & the Eumarsin websites
were on display and available for all to access.
exhibition area gave the opportunity
to the various workers on Ancillary and Strategic Research projects
to display posters and discuss their development with other interested
Agenda of presentations for the day was as follows:
Inamdar - GSI
"GSI's role in the Seabed Survey. Background and objectives. Ireland's
contribution to EUMARSIN."
Duffy - GSI
"Technical report: implementation of survey, progress and results"
Hanley - GOTECH
"The cut and thrust of a seabed survey. What it entails - the routine,
the data, the difficulties and the expectations"
Hayes - Rovtec Systems
"Data acquisition - a practical experience"
Cosgrave - BIM
"Benefits of the Seabed Survey to the Fishing Industry"
Murphy - Met Eireann
"The Seabed Survey and Meteorology - how Met Eireann avails of the
survey weather data"
O'Sullivan - Marine Institute
"Ancillary Projects within the Seabed Survey"
Mackey & Oliver O'Cadhla - Coastal Resources Centre
"Cetaceans and seabirds at sea off the west coast of Ireland"
Wall - Irish Whale & Dolphin Group
"Exploratory cetacean surveys off the Irish coast"
Anthony Grehan - Martin Ryan Institute
"The Seabed Survey - an important first step in the development of
an integrated ocean management strategy"
Cdr. Mark Mellett
"Achieving a defence policy-strategy match using naval delivered quality
Keary - LADS
"Laser Airborne Depth Sounding"
Andy Wheeler - CRC & UCD
"Seabed Survey Strategic Projects: south coast geological and bathymetric
Long - GSI
"The Ocean Drilling Program - Ireland's opportunities"
1 - Questions and issues arising
first session of the day focused mainly on GSI's progress during the 2000
surveying season. Speakers included representatives from GSI (including
GSI reps on the vessels), GOTECH (the surveying company). The speakers
presented the following;
and objectives of the project
and challenges encountered and their solutions, and
Actual data examples and maps
Most of the material presented
can be found spread appropriately around in this website.
importance of taking Sound Velocity (SVP) measurements to correct
the Multibeam data was stressed, so why was it that the measurements
are not taken more than 2-3 times a day?
GSI -It is generally
not required to take that many SVP measurements in deep water systems,
especially as in addition to the SVP dips the ship is acquiring constant
real time temperature and conductivity measurements from a hull mounted
Oscar Merne - National Parks & Wildlife Service noted that he had
reservations about long lining particularly with the problem of Bi
catch. There was concern that Shearwater migrations in Irish waters
along the shelf break could be adversely affected by this fishing
the importance of having reliable observer reports. The Norwegians
have put a lot of development into this particular problem and it
is their particular system that BIM are trailing. To date there do
not seem to be any problems.
Wheeler - CRC. Commented that he was impressed by the level of processing
and the quality of the Seabed Survey's multibeam results.
- the processing of the data was very minor and no post processing
of the data had occurred yet. They too had been very impressed with
the quality of the data.
|Finbar Moore -Duchas.
Inquired if any wrecks had been identified yet?
replied that none have been identified yet, the resolution of the
data in deep water is such that wrecks could not be resolved, however
when the survey begins to work in shallower waters there is potential
for wreck identification and mapping. The best techniques for wreck
identification however are considered to be side scan sonar and magnetics.
O'Sullivan - M.I. Commented that the SVP data has a lot of potential
uses. Would that data be made available for researchers?
- access would be made available.
Keary - LADS. Was disappointed that GSI had not shown any data examples
from the Siren. While he was QC rep on board the Siren he had seen
some excellent data acquired east of the Rockall.
- there had been some very interesting results back from the Siren
but due to the tight agenda there had not been sufficient time that
day to present some of these.
Norman - Zirconsalt. Asked about the estimated running costs for 2
replied that a standard rate would be around £20,000 to £23,000 per
day per vessel.
Maddock - Irish Fisherman's Association. Commented that there is very
little published information on tidal streams and currents along the
West Coast. There is evidence to show that there are much stronger
currents off the shelf.
- In the shallower waters, where they plan to survey next year tidal
gauges would have to be deployed. MI has commissioned a study From
University Galway to produce a prediction model on CD. It is hoped
that this will be completed by the end of December 2000.
question was asked at what resolution /scale would the GSI maps be
- the preliminary maps would be at the scale of 1:250,000 km,
2° x 1°
map sheets. In shallower waters with the greater resolution of data
more detailed maps could be achieved. The plan to store the data digitally
will also give greater flexibility in mapping at different scales.
2 - Questions and issues arising
The second session focused
on talks that were of a more ancillary nature to the main Seabed Survey,
with speakers from various partner or associate organisations including
the Marine Institute, the Coastal Resources Centre (C.R.C) and the Martin
John O'Sullivan of the Marine
Institute presented a plan and appeal for Ancillary projects; "By identifying
suitable ancillary projects, the Marine Institute aims to increase knowledge
of our vast marine resource by maximising ship-time & resources during
the Seabed Survey without compromising its strategic aim."
Dr. Anthony Grehan, Martin
Ryan Institute, Galway spoke about the "The Seabed Survey -an important
first step in the development of an integrated ocean management strategy."
He outlined the proposal to establish an "Irish Marine Task force" to
deal with integrated ocean management. He called for interested parties
to approach him for further details. Potential members in the Task Force
should include relevant sectors working in the Irish Offshore environment
e.g. academia, MI, GSI, PAD, Navy, Irish Lights etc.
Hanley - GOTECH. Asked if the Atlantic Frontiers Environmental Network
(AFEN), TOBI Project was considered to be good value for money?
replied that the whole project had cost £2.8m and that the TOBI work
was only part of the total work program, which had also included sampling,
box cores, multicores, and off bottom video system. All of which had
been considered good value. There however is a scientific need for
an Irish owned marine video system, which could potentially belong
to a National Pool of Marine Equipment.
Marine Institute were asked to comment on the status of Ancillary
projects, which were submitted at the Athlone, Seabed Survey Seminar
replied that groups who submitted proposals should be contacted within
the short term. He also advised that due to recent changes in personnel
in the MI it might well be worth contacting the MI directly again
regarding Ancillary Projects.
comment was made that the Fishing Industry has long known about the
existence of deep sea, cold water corals. In Norwegian waters the
state has created Marine protected areas where fishing is restricted
and only long line fishing is permitted.
3 - Questions and issues arising
The final session of the Seminar
focused on a Navy presentation on "defense policy strategy"
and other geological and geophysical work relating to the National Seabed
Survey, with presentations from LADS, CRC & UCD and GSI.
Ray Keary representing Tenix
LADS (Laser Airborne Depth Sounder) made a presentation on the applications
of the LADS technique, which can be used to survey in waters depths less
than 70 meters. The GSI plan to run a small, pilot bathymetric survey
using the LADS technique in shallow water off the Southeast coast of Ireland
in 2001 (this was later postponed until 2002). The advantages of the LADS
technique are that being airborne the acquisition is more time and cost
effective than normal mulitbeam sonar techniques for shallow water e.g.
up to 65 sqkm/hour survey rate (possible sounding grids, 2 x 2 m, 3 x
3 m, 4 x 4 m, 5 x 5 m, 6 x 6 m.)
for CRC spoke on behalf of the "Seabed Survey Strategic Projects: South
Coast Geological & Bathymetric Mapping," part of the Strategic Research
Programme, a programme run in conjunction with UCC and NUI Dublin. The
programmed was designed to fulfil the following objectives;
- Enhance national expertise
and capabilities in multibeam sonar applications
- Utilise Celtic Voyager
Sea time and the Marine Institute multibeam capacity
- Develop partnership between
universities and GSI
- Generate an understanding
of palaeo-estuarine dynamics
- Extend coverage of the
Barry Long, GSI gave a short
presentation on Irish involvement in the Ocean Drilling program. Ireland,
through GSI together with MI and Enterprise Ireland, indirectly became
a member of ODP in 2000 by joining the European Science Foundation Consortium
for Ocean Drilling (ECOD). The ODP is an international and long running
program and is distinct from the National Seabed Survey, however the data
and results are interlinked. The aims of the ODP are to better the understanding
of tectonic processes that shape oceans and continents, including erosion
of continents and climate change. As a member of ECOD Ireland is now able
to submit drilling proposals in Irish waters and able to send Irish researchers
on drilling programs. He requested interested researchers to submit formal
submissions for the next proposal deadline, 15th MARCH 2001. One proposal
in Irish waters is currently active: "Carbonate mounds, Porcupine basin."
One new Irish proposal being assessed by ODP: "Grenville front's location,
Rockall High." Two informal draft proposals have also been received by
the GSI. General ODP information sheets with contact details were also
distributed at the Seminar to potentially interested parties. For further
information see ODP.
|Peter Croker -
PAD. Asked why the GSI had decided to do the LADS pilot survey off
the SE coast in the Irish Sea?
GSI - are planning to focus in on that area, because they had received
a lot of customer interest in this particular region. Plus it was
an area where GSI has a significant amount of other data to compliment
the LADS data.
Moore - Duchas. Asked if any archeological sites had been identified
by the Strategic Projects' work?
CRC replied that no archaeological finds or wrecks have been identified
during the Strategic Projects program.
Bean - UCD. Asked if the LADS technique is sensitive to sea roughness
Ray Keary replied
that the technique is affected by sea roughness, but it can be adjusted
for as a video/photographic record is also recorded during LADS acquisition
on the aircraft so corrections can be made. It is however advisable
to acquire data during the best weather window.
are the larger research community doing to get into the ODP network"?
The GSI can
communicate with various interested researchers in relation to upcoming
opportunities, developments and deadlines. If a proposal in Irish
waters is accepted the GSI is entitled to put 2 technical staff working
on the drilling programme
Cooper - University of Ulster. Asked if the LADS Pilot study includes
any of the area already surveyed by the university "Strategic Projects"?
GSI replied that the LADS pilot study does not cover the same area
Tully - TCD Asked if proposals for Ancillary projects would still
MI announced that they would be managing the Ancillary Seabed Survey
Projects from 2001 onwards. The MI plan to make the "MI Research Measures
Programme" announcements in Galway on 5th December and in Dublin on
7th December. MI would consider proposals and apologised to those
who had submitted proposals during 2000 and at Athlone 1999 who had
not received notifications or acceptances for submitted projects.
Unfortunately the MI had experienced delays in arranging the "Marine
Research Measures Programme."
Murphy - Met Eireann. Asked if there was a plan to put all the digital
bathymetric data into one regional dataset?
GSI replied that all the data would be available in digital format
and that they would probably produce one large-scale regional digital
map if there were a significant customer interest to produce one.
Michael Philcox - Asked how much
the data would cost for research institutes?
GSI replied that cost scenarios, data access and licensing issues
are still to be resolved. The plan will be to make data available
to research institutes since the GSI want to encourage maximum usage
of the data, however the GSI plan to recover some revenue from the
sale of data and maps. Researchers are reminded that the closing date
for European Marine Ecosystems projects for Irish Researchers is the
15th October 2001 under the current EU programme.
Shannon, UCD Asked when would the first lot of data be available?
- they would hope to have data available for purchase in June 2001.
Maddocks, Irish Fisherman's Association Congratulated the Navy on
the charting of fishing activity. Knowing the level of foreign, fishing
activity in the Irish offshore is particularly useful
the closing comments Peadar McArdle, Director GSI thanked all the speakers,
chair, and organisers of the seminar for their contributions to a most
successful day. The Seminar had provided a huge opportunity for those
workers involved in the Marine Environment to see the progress to date
of the National Seabed Survey. The forum had provided an opportunity to
build upon the spirit shown to increase the knowledge and skills of the
Irish maritime nation.