The INIS Hydro Legacy

The INIS Hydro Legacy
John Howe & INIS Partners
Scottish Association for Marine Science
Scottish Marine Institute
Oban
UK
[email protected]
NERC RATE
Lo-Rise (LongRange Transport
of Radionuclides
in the Marine
Environment
INIS Legacy
Working Together – INIS Partnership
SAMS Experience
Studying a whirlpool!
MAREMAP – the mapping family
Life at the bottom of the Firth of Lorn
Future work – Civil Hydrography Program
INTERREG V
Improved Data
Quality !
1. Reson 8124 Test
Data, central Firth of
Lorn
RV Calanus
February 2009
2. Reson 7125 INIS
Hydro Survey,
RV Calanus
June 2012
W-E profiles of the Gulf of Corryvreckan
Whirlpool Gulf of Corryvreckan bathymetry
S N
N
1.
Scarba
S N
2.
Jura
Scarba
S
N
3.
Jura
Scarba
S
N
4.
Jura
Scarba
S
5.
Jura
Scarba
Jura
Scarba
B
A
A
B
Dune crest 190m wide, 25m high. Complete ridge is 1.7km long
D
C
Jura
Whirlpool Gulf of Corryvreckan
‘Great Race’ submarine dunes
influence of confined
to unconfined flow?
C
1.5km long dune field
Dunes 3-10m high
20-100m approx wavelength
D
NERC TSB Grant proposal
‘Sediment mobility under strong
tidal flows’ BGS-SAMS-HWUASTROSAT Ltd
F
E
Type 3A Banner Banks?
E
1 km
F
East of Corryvreckan, multi-crested dunes, 15m high 1km2
with superimposed bedforms in water depths of 30-60m
100
75
50
25 (m)
1 km
Previously unknown coarse-grained sediments – mobile
bedforms? Vulnerable habitat? Relict sediment?
NERC investment in
Underwater robotics and
autonomous vehicles –
MAREMAP Remus 600 AUV
multibeam system and ROV.
UKCS multibeam
Surveys ~45%
coverage…?
REMUS 600 AUV
! 
! 
! 
! 
Propeller-driven vehicle
Speed: 4.5 knots (~2.5m/s)
Endurance: 24h, >100km
Depth rating: 600m
!  Scientific objective: studying coastal and shelf-edge
areas, mapping vulnerable and protected habitats,
geodiversity
!  Equipped with:
!  GPS
!  Iridium, Wi-Fi and acoustic communications
!  Conductivity Temperature Depth sensor
!  600 kHz ADCP (up and downward looking)
!  Micro-structure sensing package
200
150
100
5 km
Moving forward – can predictive habitat
mapping be used to identify vulnerable
habitats in the Firth of Lorn e.g. Lophelia
(cold water corals?)
Predictive habitat mapping
building on
previous studies with SNH
(Butters et al., In Prep)
50 (m)
JHI-SAMS The (submarine)
Landscape Theatre
Ordnance Survey (10m resolution) Digital
Terrain Model extracted for the land around
Loch Linnhe.
Multibeam sonar data (1m resolution),
surveyed by the UK Marine Environmental
Mapping programme (MAREMAP) by the
Scottish Association for Marine Science
(SAMS) and the British Geological Survey,
(BGS) and the National Oceanography Centre
(NOC), combined with Admiralty seabed data.
Visual Natural Studio (VNS) used to render a
3D model combining the seafloor and terrestrial
areas (221km2; 2.5m resolution), with true
scale above sea level and a 2 times vertical
exaggeration below sea level.
An innovative and powerful
tool for developing marine
policy & planning
High-resolution aerial imagery used for
background landscape textures.
Extruded buildings were derived from
Ordnance Survey MasterMap.
Etive – Civil Hydrography Program 2014
An unsurveyed fjord under pressure?
Located 6 km N. of Oban, west coast of Scotland.
1-2 km wide, 30 km long.
Several basins separated by shallow sills.
The entrance sill is only 7 m below mean high water (MHW) constrains currents so
that the internal tidal range of the loch is 1.8 m, c/f external range of 4 m
Rivers Awe and Etive = catchment area of 1,350 km2
The outer E-W trending basin <70m, inner NE-SW trending basin,150 m.
Thankyou
Acknowledgements
Officers and crew of RV Calanus, RV White Ribbon, NLV Pole Star,
Claire Smalley, Andrew Lessnoff, Andre Cocuccio, David Parker,
Fergal McGrath, Danny Wake, Tim le Bas, Clayton Summers,
Richard Fotheringham, Sean Cullen, Alan Stevenson, Bob Gatliff,
Russ Wynn, Tom Bradwell, Dayton Dove, Rhys Cooper, Mike Spain,
Adrian Gibbons, Rae Boyd, John Beaton, Colin Abernethy, Andrew Mogg,
Estelle Dumont, Colin Griffiths, Graeme Bruce & David Ainsley