towards integration and synthesis of margins s2s research in png and nz focus areas
DESCRIPTION
Towards Integration and Synthesis of MARGINS S2S Research in PNG and NZ Focus Areas. Steven Kuehl Nicola Litchfield Alan Orpin April 5-9, 2009 Gisborne, NZ. Workshop goals and products. Delineate the key results from the two S2S focus sites - PowerPoint PPT PresentationTRANSCRIPT
Towards Integration and Synthesis of MARGINS S2S Research in
PNG and NZ Focus Areas Steven Kuehl
Nicola LitchfieldAlan Orpin
April 5-9, 2009 Gisborne, NZ
Workshop goals and products
• Delineate the key results from the two S2S focus sites
• Identify the outstanding scientific gaps to fulfill the program goals
• Demonstrate the wider potential of our results to the understanding of source-to-sink systems globally
• Documenting the societal relevance of our results
• Identifying future research goals and opportunities
TWO CONTRASTING SEDIMENT DISPERSAL
SYSTEMS
Understanding Earth surface processes that transfer material from
Source to SinkHow do they operate?What is transported?
How much is transported?How quickly is it transported?
How are the segments of the systems linked?How have the systems changed through time?
Waipaoa
Fly
COMPARISON OF DISPERSAL SYSTEMS Fly Waipaoa
Climatic setting wet tropical temperate
Basin size 75,000 km2 2,200 km2
Sediment Discharge large (108 t/y)moderate (107 t/y)
Manipulation small (+35%) large (+550%)
Lowland floodplainlong tidal reach trivial tidal reach
River mouth delta, mangroves strand plain
Discharge events unrelated to oceancorrelated to ocean
Gravity flows saltwater also freshwater (fluid mud)(hyperpycnal flows)
Shelf sedimentation clinoform prograde basin infill
Tectonic setting foreland basin fore-arc basin
Offshelf loss ~3% ~15%
Offshelf seds mostly carbonate mostly siliciclastic
Better view of PNG clinoformmodern sedimentation over old clinoform
400 m
Courtesy of Rudy Slingerland and Neal Driscoll
Tcherepanov et al. (2008)
Prograding sequences topped by shelf-edge delta and drowned barrier reef
Longer-term stratigraphic record
Waipaoa Shelf Shallow Structure - Chirp
Holocene Isopachs
4. Last post-glacial
Gerber et al., submitted
A/C
Active uplift
Active uplift
Imbricate thrustfaults
Deformation front
avalanche debrisQuaternary
shelf fill
Quaternary basin fill
3 km
2 km
1 km
MCS profile, Tuahine Ridge
MCS profile, Poverty slope
Courtesy of Josh Mountjoy
Courtesy of Alan Orpin
BUILDING A PREDICTIVE AND HOLISTIC UNDERSTANDING FOR SOURCE TO SINK STUDIES FROM PROCESS TO MARGIN-SCALES
BREAK-OUT GROUP REPORT HIGHLIGHTS
Active feedback b/w observations and models, CSDMS, model results inform need for/direction of data collection, determination of landscape trajectories
Equifinality – multiple different events that can create the record, use modelling to distinguish
Bridging timescales, production and storage areas
Transfer knowledge gained from WSS into other systems
Linking models b/w and across S2S systems – uplands, floodplain, coastal, offshore, biogeochemistry
• An integrated community of experts to promote the quantitative modeling of earth-surface processes: 265 members, 135 Institutions, 22 countries, 8 working groups or focus research groups
• Cyber-infrastructure to distribute Model, Data and Educational Repositories: 52+58 models (235,000 lines of code in 22 languages); 32 model initialization or boundary condition global databases; >100 ppt presentations, lecture materials & movie simulations.
• Middleware to couple dynamical models, at specific temporal and spatial scales: CSDMS Framework consists of CCA architecture and services (Babel, Ccaffine, Bocca, SIDL, PETSc), and OpenMI Interface Standards, to allow for multiple open-source languages in a HPC environment.
• Partnerships with related computational programs, field campaigns and laboratory experiments: e.g. ESMF, CCSM, CCA, OpenMI, CSTMS, CCMP, OMS, MARGINS, CZO, HIS, NCED, LOICZ, NOPP
What is CSDMS?What is CSDMS?
S2S MARGINS, NZ, 2009
MoisturePrecipitatio
nNCAR:
75x75 km, 1hr
S2S MARGINS, NZ, 2009
MoisturePrecipitatio
nNCAR:
37x37 km, 1hr
Modular Modeling
S2S MARGINS, NZ, 2009
SedFluxModelin
gSchema
Boundary Condition
Acquisition/Generation
Boundary Condition
Acquisition/Generation
Model Resolution;Processes;Upscaling
Model Resolution;Processes;Upscaling
Error Propagation;Uncertainty
Error Propagation;Uncertainty
Field/LabValidation
Error
Field/LabValidation
Error
helps to quantify Geoscience knowledge
in terms of:
Uncertainty, Variability, Error, Precision, Accuracy,
Confidence
CLIMATE-OCEAN DRIVERS OF SOURCE-TO-SINK SYSTEMS
BREAK-OUT GROUP REPORT HIGHLIGHTS
TWO-YEAR PLAN
Rapid-response, event characterisation Evaluating sediment records from Lake Murray Hindcast response to “Bola” scale event
TEN-YEAR PLAN
Integration and comparison with global sedimentary systems The Pacific Sediment Circle (“The Ring of Mud”) Reaching budget closure at the abyssal plain
ROLE OF CARBON AND SOLUTES FLUX STUDIES IN S2S
BREAK-OUT GROUP HIGHLIGHTS
How do transport pathways and storage dynamics affect biochemical cycling? How does biogeochemistry across S2S systems affect sediment production, transport, and burial?
“One of the exciting outcomes of the meeting was the synergy identified between carbon and sedimentary cycles, carried out within the S2S framework”
Community Consensus
• benefit of process-related lines of inquiry with sediment studies
• benefit of exploring closer relationship with the carbon community
• S2S-type studies in other focus areas of scientific and societal relevance (e.g., Arctic)These approaches could be incorporated under the new MARGINS program, but might also prosper under other program directions.
Future Directions
The importance of tectonics in the production of sediment and accommodation space, across a range of timescales raises the question of the appropriateness of timescales when working in areas with high tectonic activity. Punctuated tectonic and high-frequency sediment responses are avenues for future work.
Short-Term Goals
Filling gaps in S2S Science- e.g, tidal and lower Fly floodplain, longer term record, integration and synthesis proposals
Workshop to plan summary volume - holistic overview and synthesis “S2S Text”
Smaller working group meetings focused (e.g., Carbon and Arctic Science)
Integration with CSDMS
• Short-Term Goals
Fly Tidal River – The Missing Link
Tides extend 300 km to Obo Classic tide-dominated delta at river mouth
Courtesy of Bill Dietrich
Courtesy of Sergio FagherazziObo
CIGCIGCCSMCCSM CSDMSCSDMS
What is CSDMS?What is CSDMS?
Modeling Planet Earth (CIG, CSDMS, CCSM)
• An integrated community of experts to promote the modeling of earth-surface processes.
• Protocols for the library of community-generated, continuously evolving, open software.
• Cyber-infrastructure to distribute software tools & models in aid of applied and education uses.
• Partnerships with related scientific programs, providing strong linkage between predictions and observations.
CSDMSCSDMSCSDMSCSDMS