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walis-marine-group-nedf-workshop-presentation-28-mar08-steveblake

The Western Australian Marine Science Institution [WAMSI] Presentation to the WALIS Marine Group – NEDF Workshop Report 28 March 2008 Steve Blake.

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walis-marine-group-nedf-workshop-presentation-28-mar08-steveblake

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  1. The Western Australian MarineScience Institution [WAMSI]Presentation to the WALIS Marine Group – NEDF Workshop Report 28 March 2008Steve Blake

  2. The story so farNEDF Concept;2006/07 User/ Stakeholder Meetings;Audit, Science Case, Business Case, Background Papers;NEDF Workshop – Canberra, 18 Mar 2008

  3. Workshop ReportBy invitation only workshop;G. Searle, S. Blake & W. Featherstone attended from WA;Very professionally put together & sponsored by The Australian Academy of Science with senior representation

  4. Workshop ReportClear user-requirement[s] esp. the + 20 m coastal regions;No new $$; no articulated priority regions;Environment for governance & coordination as the main focus of effort

  5. Workshop ReportAttention of key decision makers;Do need a seamless DEM – nested product;Future upgrade/ maintenance path required

  6. Workshop Report900 separate elevation datasets across Govt alone & more in private sector;Most project driven;Diverse, no consistency in specification

  7. Workshop ReportASIBA interest;Prof Clive Fraser’s talk – excellent technical reference [need to source a copy];Three scales: sub-metre, 1-2 m & 5-15 m

  8. Workshop ReportDSM – DEM conversion can be costly;Horizontal Datum – not an issue;Vertical Datum – “the” issue

  9. Workshop ReportOther main issue: the interface between bathymetry [tidal datum] & land elevation;LIDAR stats: DSM’s at 10 -30cm res = $150 - $350 km2 [assuming a 1 km swath];But DSM – DEM costs still high

  10. Workshop ReportLADS: up to 60m water depth but problematic in turbid/ surf zone;Quickbird satellite: 2-3m DSM’s routineSPOT 5 HRS: being captured for whole continent [AGO Project]

  11. Workshop ReportFuture = High frequency LIDAR – can fly higher – cheaper cost per unit area;AHD – can be revised now [40 yrs of data that can be applied]WA tilt = 0.4 m caused by sea surface topography

  12. Workshop ReportLarge volumes of data – proprietary storage formats;LIDAR – largest current investment: - 15 cm highest res - 50 cm lowest resAHD = OK as base datum

  13. Workshop ReportImportance of “repeatability” around key locations around Australia;ie. temporal aspect as well as 3-D aspectBrokering point, LIDAR specifications etc to reduce transaction costs??

  14. Workshop Report - SummaryGood background documents prepared;Some good technical summary PPT’s;No agreed way forward – in terms of governance & coordination in short term;No cashed-up client??

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