Integrating Geospatial Remote and in-Situ Sensing: Opportunities...
Transcript of Integrating Geospatial Remote and in-Situ Sensing: Opportunities...
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Integrating Geospatial Remote and in-Situ Sensing: Opportunities and Challenges
Margaret McCaul, Jack Barland, Eoghan McNamara, Sean Jordan, John Cleary, Conor Calahane*, Tim
McCarthy* and Dermot Diamond
INSIGHT Centre for Data Analytics, National Centre for Sensor Research, Dublin City University
*National Centre for GeoComputation, NUI Maynooth
Invited Keynote Lecture presented at
ISEH 2016, ISEG 2016 & Geoinformatics 2016 NUI-Galway, 17th August 2016
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‘Insight Centre for Data Analytics’ •! Biggest single research investment ever by Science Foundation Ireland
•! Biggest coordinated research programme in the history of the state
•! Focused on ‘big data’
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Keynote Article: August 2004, Analytical Chemistry (ACS)
Dermot Diamond, Anal. Chem., 76 (2004) 278A-286A (Ron Ambrosio & Alex Morrow, IBM TJ Watson)
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Remote (Continuous) Sensing Challenges: Platform and Deployment Hierarchies
Physical Transducers –low cost, reliable, low power demand, long life-time
Thermistors (temperature), movement, location, power,, light level, conductivity, flow, sound/audio, !!
Chemical Sensors – more complicated, need regular calibration, more costly to implement
Electrochemical, Optical, .. For metal ions, pH, organics!
Biosensors – the most challenging, very difficult to work with, die quickly, single shot (disposable) mode dominant use model
Due to the delicate nature of biomaterials enzymes, antibodies!.
Gas/Air Sensing – easiest to realise
Reliable sensors available, relatively low cost
Integrate into platforms, develop IT infrastructure, GIS tools, Cloud Computing
On-land Water/ Monitoring
More accessible locations
Target concentrations tend to be higher
Infrastructure available
Marine Water
Challenging conditions
Remote locations & Limited infrastructure
Concentrations tend to be lower and tighter in range
Increasing difficulty & cost
Increasing difficulty & cost
Increasing scalability
Physical Transducers –low cost, reliable, Physical Transducers –low cost, reliable, low power demand, long life-time
Thermistors (temperature), movement, location, power,, light level, conductivity, flow, sound/audio, !!
Physical Transducers –low cost, reliable,
Thermistors (temperature), movement, location, power,, light level, conductivity, flow, sound/audio,
organics
Chemical Sensors – more complicated, need regular calibration, more costly to implement
Electrochemical, Optical, .. For metal ions, pH, organics!
Chemical Sensors – more complicated, need regular calibration, more costly to
Biosensors – the most challenging, very Biosensors – the most challenging, very Biosensors – the most challenging, very difficult to work with, die quickly, single shot (disposable) mode dominant use model
Due to the delicate nature of biomaterials enzymes, antibodies!.
Biosensors – the most challenging, very difficult to work with, die quickly, single
Marine Water
Challenging conditions
Remote locations & Limited infrastructure
Concentrations tend to be lower and tighter in range
Marine Water
Challenging conditions
Remote locations & Limited infrastructure
Concentrations tend to be lower and tighter in range
On-land Water/ Monitoring
More accessible locations
Target concentrations tend to be higher
Infrastructure available
On-land Water/ Monitoring
More accessible locations
Target concentrations tend to be higher
realiseGas/Air Sensing – easiest to realise
Reliable sensors available, relatively low cost
Integrate into platforms, develop IT infrastructure, GIS tools, Cloud Computing
Gas/Air Sensing – easiest to
Reliable sensors available, relatively low cost
infrastructure, GIS tools, Cloud Computing
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Argo Project (accessed March 20 2016)
•! Ca. 4,000 (3918) floats: temperature and salinity •! Bio/Chem: Nitrate (64), DO (280), Bio-optics (115), pH (25) DO is by Clark Cell (Sea Bird Electronics) or Dynamic fluorescence quenching (Aanderaa)
‘calibration of the DO measurements by the SBE sensor remains an important issue for the future’, Argo report ‘Processing Argo OXYGEN data at the DAC level’, September 6, 2009, V. Thierry, D. Gilbert, T. Kobayashi
@!60K ea! See https://picasaweb.google.com/JCOMMOPS/ArgoMaps?authuser=0&feat=embedwebsite
DO is by Clark Cell (Sea Bird Electronics) or Dynamic fluorescence quenching (
https://picasaweb.google.com/JCOMMOPS/ArgoMaps?authuser=0&feat=embedwebsite
DO is by Clark Cell (Sea Bird Electronics) or Dynamic fluorescence quenching (@!@!@ 60K ea!
https://picasaweb.google.com/JCOMMOPS/ArgoMaps?authuser=0&feat=embedwebsite
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Satellite Remote Sensing •! Big Data: An IKONOS 4-band multispectral image at 1-m pixel size
covering an area of 10 km by 10 km, digitized at 11 bits (stored at 16 bits), has a data volume of 200 MB per image.
•! Coverage is not continuous •! Image quality depends on weather
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Global Sea Surface Temperature Patterns
$"$"
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%"
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Kinvara Region - Topography
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Kinvara Region - Topography Kinvara Region - Topography Kinvara Region - Topography
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(1) Kinvara; (2) Kinvara Bay; (3) Caherglassuan Turlough; (1-4) Section A from Kinvara Eastwards towards Peterswell and the Slieve Aughty Region (4); 1-5 Section B from Kinvara Southwest towards Slieve Carran
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Karst landscape is characterized by underground drainage systems (caves, conduits, cracks, etc).
Coole Lough
Caherglaussan Turlough
Blackrock Turlough
Kinvara: Hydraulic Connection
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''"
Sentinel-2 Hi-Res Satellite (August 27, 2015) resolution 10-20 m
Dunguaire Castle
Kinvara East
Kinvara West
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Fly-Over Sensing
'!"
C1
( )
*
A) Sensor pod mounted on the wing strut of a Cessna 172 light aircraft; (B) The NCG sensor pod used to acquire data; (C). Flight paths for aerial flyovers of Kinvara bay and catchment area. K1 covers the inner bay while K2, K3 and K4 map the length of the bay from Kinvara to the mouth of the bay
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In-Situ Sensing – Rig and Sampling Points
'+"
Weight
CTD Diver
Buoy
Braided Polyethylene rope
A
B
A
B
Location of in-situ data points collected over a four-day sampling campaign in (A) Kinvara Bay and (B) Cahergluassuan Turlough
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',"
July 2013 sea surface temperature map of Kinvarra Bay generated from Landsat 8 Satellite sensing (left) and in-situ Sensing (right): Thermal imaging resolution 100 m; 16-day cycle (8-days with Landsat 7)
Comparing In-Situ and Satellite SST Measurements
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In-Situ Temp (L) vs Salinity (R)
'-"
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Correlation of In-Situ Temperature and Salinity Measurements (East-West Transect)
'#"
Te m p e r a t u r e a n d sa l in i ty t ransec t , stretching left to right from Kinvara pier (west) to Dunguaire castle (east); with salinity contour plot f r o m i n - s i t u b a y survey T h e e f f e c t o f individual cold-water plumes is clearly evident in the salinity and temperature data.
Low Tide
Groundwater discharge during low tide decreases the average surface water salinity of the southern part of Kinvara Bay by ~9 ppt
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-8.935 -8.934 -8.933 -8.932 -8.931 -8.930 -8.929 -8.928 -8.927 -8.926 Te
mpe
ratu
re
Salin
ity (p
pt)
Longitude
Salinity Temperature
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Low Tide/High Tide Comparison
'$"
Temperature
Salinity
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SST Multi-Spectral Imaging
'%"
Similar Patters in SST are obtained from MultiSpectral Flyover Measurements Conclusion: Satellite, Flyover, and In-situ Temperature Measurements are Highly Correlated Salinity and temperature are highly correlated
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Correlation between In-Situ Temperature (top)
In-Situ Salinity &
Temperature Transect (middle)
and Remote Thermal IR Fly-Over Data (bottom)
'&"
13
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-8.935 -8.933 -8.931 -8.929 -8.927
Tem
pera
ture
Salin
ity (p
pt)
Longitude
Salinity Temperature
-8.933 -8.931
Salinity Temperature
-8.927
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Nutrient Measurements
Nitrite
Nitrate
Phosphate
Nutrient levels at high tide
Max Nitrite: 0.12 mg/L
Max Nitrate: 0.19 mg/L
<0.01 mg/L
Max Phosphate: 0.08 mg/L
0.12 mg/L
0.16 mg/L
0.22 mg/L
<0.01 mg/L
0.01 mg/L
Caherglaussan Turlough
Kinvara Bay
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Autonomous In-Situ Chemical Sensing
•! Based on well established wet chemistry Colorimetric Methods
•! Microfluidics used to implement methods •! Focus on Nutrients (phosphate, nitrate,
nitrite, ammonia) •! Integrated reagents, standards, fluidics,
electronics, power and communications •! Major deployments recently completed in
Mediterranean and Artic
!'"
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Ichnussa Research Cruise Realized CTD stations (yellow dots) and the track (red line) from Messina in Sicily to Naples in central Italy. ,CD#EEFGHIFJGIFKLIKFE*+)&MID,DN34/O$$
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Sample Collection
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Station Name: Geostar
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Nitrate profiles from surface to depth (3500m)
CTD and Chlorophyll profiles from surface to depth
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Ny-Ålesund-Svalbard
78° 55" 30# N, 11° 55" 20# E
Co-ordinates:
Spitsbergen
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Glaciers at Ny-Ålesund
•! Arial pictures of Kongsvegen glacier. •! Samples were acquired and system deployed in front of the
glacier
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Sample Collection
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In-situ Measurements
CS Deployable system acquiring samples on board the MS Teisten beneath the of Kongsvegen glacier
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Nutrient Challenge$.
+!"
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Participants March 2015
++"
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Current Status$.
+,"
Field Test 1: Maumee River, Waterville, OH. Set-up and Training: May 23-25
Field Deployment: May 26 Retrieval: June 28
Instruments Shipped to Vendors: July 7
Laboratory Test: Chesapeake Bay, Solomons, MD. Set-up and Training: July 8-10
Lab Test: July 11-15 Instruments immediately transitioned to Field Test 2
Field Test 2: Chesapeake Bay, Solomons, MD. Prep for Field Deployment: July 16-17
Field Deployment: July 18 Retrieval: October 11
Instruments Shipped to Vendors: October 18
Field Test 3: Kaneohe Bay, HI. Set-up and Training: October 3-5
Field Deployment: October 6
Laboratory Test: Chesapeake Bay, Solomons, MD. Set-up and Training: July 8-10
Lab Test: July 11-15 Instruments immediately transitioned to Field Test 2 Instruments immediately transitioned to Field Test 2
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Thoughts$. •! Remote SST temperature can be used as a surrogate
for in-situ salinity to track dynamics of fresh/sea-water mixing in the bay
•! Assuming that the composition of each water type is relatively well conserved, then we can track the distribution of their chemistries in the bay e.g. track where the nutrients go with minimal in-situ measurements
•! This is turn can dramatically change our sensing and sampling strategy –! Fewer in-situ measurements needed (Ground Truth system)
–! Much lower cost
•! Wide spatial and Temporal coverage
+-"
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Thanks to$..
•! Members of my research group
•! NCSR, DCU
•! Science Foundation Ireland & INSIGHT Centre
•! Enterprise Ireland
•! Research Partners – academic and industry
•! EU Projects: NAPES, CommonSense, Aquawarn, MASK-IRSES, OrgBio
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Acknowledgements
Shane Burke Sail Galway bay Bob Welch
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