Streamlining the data gathering, processing, and charting

Fabio Sacchetti (PhD)

Hydrographic Team Leader INFOMAR

PING to CHART STEPS • Survey planning strategies • Processing challenges • Charting and tracking methods • Data dissemination

FOCUS

Ptolemy World Map – 2nd Century AD Mappa Mundi – 14th Century AD

Piri Reiss Map – 16th Century AD

Charting The Unknown

17th Century AD Accurate!!

Atlantis Map – 19th Century AD

Survey strategy

Data processing consist in a series of data manipulation, data cleaning and quality control necessary to correct these errors and obtain good data quality.

Good data = happy processor

Bad data = grumpy processor

Tiring

Turning some ugly into something beautiful is rewarding

Technology evolution - multibeam

SVP sensors

Tide gauges

GPS and motion sensors

Technology evolution – ancillary sensors

Data processing - charting challenges Datum control

MSL definition Malin Head → MSL2000

LAT model Polpred → VORF

Tidal corrections Tide gauges → GPS tide

Data processing - charting challenges

backscatter

Raw backscatter

Processed backscatter

Fledermaus / QTC)

Processed backscatter

caris

Donegal Bay - 2002 data

Iceberg scours

Offshore Bantry - 2006 data

Mixed seabed

Raw

Backscatt

er

Ge

oco

ded

Backscatt

er

Offshore Bantry - 2006 data

Mixed seabed Donegal Bay - 2002 data

Iceberg scour

Bathy Shaded relief Backscatter

Seabed classification

Charting and monitoring tools

S-57+Priority areas Locations Data status Datum-level Survey Leg Polygons Outstanding areas

Chart tracking

Charting and monitoring tools

Data access

View datasets in Webmapping Viewers. In both viewers you can then select an area of interest to download data from IWDDS

Download data from Interactive Web Data Delivery System (IWDDS)

View Metadata on datasets available

NOAA’s website

Access Web Map Services (WMS) used in the viewers to display bathymetry backscatter, shaded relief and seabed classification and use with your own data in ArcGIS and ArcExplorer online.

Data access

Data access

Keep in touch

Sediment samples Lidar

charts Multibeam

Benchmarking

Thanks Questions?