Hydrographic Surveying • Introduction of Speaker • Definition • Applications • Echo sounding • Sounding equipment • Survey vessels • Dredging equipment • Software – Data Processing • Tidal Datums • Projects • Education • ACSM/ THSOA Hydrographer Certification • Links Widseth Smith Nolting & Assoc., Inc.
Introduction of Speaker Juergen Brunkhorst Hometown: Rotenburg (W.) College: Hamburg Employment: Wilhelmshaven and Rostock Widseth Smith Nolting & Assoc., Inc.
Definition Hydrography is the branch of applied sciences which deals with the measurement and description of the physical features of oceans, seas, coastal areas, lakes and rivers, as well as with the prediction of their change over time, for the primary purpose of safety of navigation and in support of all other marine activities, including economic development, security and defence, scientific research, and environmental protection. (International Hydrographic Organization ) The scientific description and analysis of the physical conditions, boundaries, flow, and related characteristics of the earth's surface waters. The mapping of bodies of water. Bathymetry The measurement of the depth of bodies of water • Underwater topo • Features and breaklines not visible Widseth Smith Nolting & Assoc., Inc.
Applications • Safe and efficient operation of maritime traffic control • Charting • Port management • Dredging and coastal engineering (Navigation, Cleanup – Fox River, WI) • Beach Replenishment • Exploration and Exploitation of Marine Resources • Utility lines – offshore wind farm • Marine archaeology • Other marine scientific purposes • Coastal Zone Management • Environmental Protection • Maritime Defense Widseth Smith Nolting & Assoc., Inc.
Conventional Widseth Smith Nolting & Assoc., Inc.
Echo sounding Principle • Sonar • Transducer • Depth = Speed of Sound x Travel time x 0.5 • Speed of Sound in Water is approx. 1,500 m/s (salinity, temperature) • Compare to Air: 340 m/s • Probe or Bar check Equipment • Single-beam • Multibeam • Sub-bottom profiler • Side scan sonar Widseth Smith Nolting & Assoc., Inc.
Survey Methods Widseth Smith Nolting & Assoc., Inc.
Single-beam Single-beam echo sounders collect discrete data points along survey track lines. • Commonly available • Low cost • Portable • Easy deployment • Dual frequency (200 kHz/33kHz) • Highly accurate • 200 kHz – 1cm (0.1% of depth value) • 33 kHz – 10cm (0.1% of depth value) HydroLite-TM (Professional Surveyor Magazine Sep 2010) Widseth Smith Nolting & Assoc., Inc.
Multibeam Widseth Smith Nolting & Assoc., Inc.
Sub-bottom profiler Identify and measure various marine sediment layers that exist below the sediment/water interface. Widseth Smith Nolting & Assoc., Inc.
Side scan sonar Widseth Smith Nolting & Assoc., Inc.
Survey Boats/Vessels POB - March 28, 2011 Widseth Smith Nolting & Assoc., Inc.
Backhoe Dredger Widseth Smith Nolting & Assoc., Inc.
Backhoe Dredger • Up to 65 meters long • Bucket capacity of up to 40 m 3 • Maximum digging depth of 32 m Widseth Smith Nolting & Assoc., Inc.
Mechanical Dredge Widseth Smith Nolting & Assoc., Inc.
Bucket Dredger Widseth Smith Nolting & Assoc., Inc.
Cutter Dredger Widseth Smith Nolting & Assoc., Inc.
Trailing Suction Hopper Dredger Widseth Smith Nolting & Assoc., Inc.
Trailing Suction Hopper Dredger Widseth Smith Nolting & Assoc., Inc.
Software - Survey Data Input • Position • Depth • Heading • Tide • Heave Background • DXF • Chart • Planned lines Widseth Smith Nolting & Assoc., Inc.
Software - Processing • Filter Outliers • Apply Sound Velocity, Tide, Draft, Heave Widseth Smith Nolting & Assoc., Inc.
Data Processing Vertical Datum – Tide Readings Motion Sensors Gyros and accelerometers for real time motion measurements. LAT = Lowest Astronomical Tide Widseth Smith Nolting & Assoc., Inc.
Tidal Datums (vs. NAVD 88/NGVD 29) LAT = Lowest Astronomical Tide Widseth Smith Nolting & Assoc., Inc.
Software – Backhoe Dredger Widseth Smith Nolting & Assoc., Inc.
Software – Cutter Dredger Widseth Smith Nolting & Assoc., Inc.
Software – Hopper Dredger Widseth Smith Nolting & Assoc., Inc.
Project – Cape Town Widseth Smith Nolting & Assoc., Inc.
Project – Terschelling Widseth Smith Nolting & Assoc., Inc.
Project – Terschelling Widseth Smith Nolting & Assoc., Inc.
Project – Rostock Widseth Smith Nolting & Assoc., Inc.
Project – Minden Widseth Smith Nolting & Assoc., Inc.
Education Durham, NH Ocean Mapping options on the Master of Science and Doctor of Philosophy degrees in Ocean Engineering and Earth Sciences The University of Southern Mississippi, Hattiesburg, MS One-year program - Master's degree in hydrographic science University of New Brunswick, Fredericton, NB, Canada Widseth Smith Nolting & Assoc., Inc.
Hydrographer Certification American Congress on Surveying & Mapping (ACSM) • NSPS Certified Survey Technician (CST) • BLM Certified Federal Surveyor (CFeds) • Certified Floodplain Surveyor (CFS) ACSM/THSOA Hydrographer Certification is well-recognized and considered by many Federal, State and local agencies as well as private firms, seeking subcontractors when evaluating technical proposals for marine engineering, surveying, and construction. These include port authorities, NOAA and the Corps of Engineers. The certification program is also endorsed by The Hydrographic Society of America which provides financial support through annual contributions. Designed for hydrographers with five years of experience, ACSM/THSOA Certification authenticates your work experience and gives credence to your resume. Earn certification through examinations offered throughout the year. Widseth Smith Nolting & Assoc., Inc.
Links International Hydrographic Organization (IHO) http://www.iho.int Category A – Most advanced standard of training Category B – Aimed at technician level The Hydrographic Society of America (THSOA) http://www.thsoa.org Western Dredging Association (WEDA) http://www.westerndredging.org Widseth Smith Nolting & Assoc., Inc.
Contact Juergen Brunkhorst, LS, CH juergen.brunkhorst@wsn.us.com Widseth Smith Nolting 610 Fillmore St Alexandria, MN 56308 Widseth Smith Nolting & Assoc., Inc.
Webography http://2.bp.blogspot.com http://www.nan.usace.army.mil http://celebrating200years.noaa.gov http://www.nauticalcharts.noaa.gov http://geosci.sfsu.edu http://www.nspsmo.org/ http://gralston1.home.mindspring.com http://www.oicinc.com http://oceanexplorer.noaa.gov http://www.omg.unb.ca/omg/ http://ports.co.za http://www.ozcoasts.org.au http://ramsdells.net http://www.professionalmariner.com http://wiki.reikapaat.fi http://www.reson.com http://www.acsm.net/ http://www.schlei-ostsee-urlaub.de http://www.aquasurvey.com http://www.seafloorsystems.com http://www.ardglobal.com http://www.shipmotion.se http://www.argos-luftbild.de http://www.teara.govt.nz http://www.blythworkcats.co.uk http://www.theartofdredging.com http://www.boskalis.com http://www.thsoa.org/ http://www.ccom.unh.edu/ http://www.usm.edu/marine/ http://www.dcsc.tudelft.nl http://www.welt-atlas.de http://www.dredge.com/ http://www.westerndredging.org/ http://www.dredgingtoday.com http://www.windpowerninja.com http://www.foxriverwatch.com http://wsa-bremen.de http://www.garmin.com http://www.wsd-nordwest.de http://www.gehe-trading.de http://www.glerl.noaa.gov http://www.hypack.com/new/ http://www.ihcmerwede.com http://www.iho-ohi.net/english/home/ http://www.latitude38.com http://www.marinearchaeologists.com http://www.maritimejournal.com http://www.meridata.fi http://www.musing.nl Widseth Smith Nolting & Assoc., Inc.
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