Post on 03-Jan-2017
The Visionary* California Seafloor Mapping Program
Sam Johnson (USGS)
* scale, comprehensive scope, ambition
December, 2005 Statewide Marine Mapping Planning Workshop (hosted by CSUMB) 56 participants 38 institutions
Coastal Map Development Workshop
To design a map series and GIS map product for coastal zone management
May 2-3, 2007 Menlo Park, CA
60 participants 25 institutions
California Ocean Protection Council approves $15 million
for seafloor mapping (10/07)
Marine Life Protection Act (1999)
Marine Life Protection Act requires CA Fish and Game to develop a network of marine protected areas in California waters to protect habitats and preserve ecosystem integrity
Sea Floor Mapping Integrated mapping of the coastal and marine environment to define offshore hazards and
sediment processes, support habitat and resource management, and monitor change.
Rock
Gravelly Sand
Muddy Sand
Mud Backscatter
Bathymetry
Seafloor Video
Seafloor Photography
Seismic Reflection
Sampling
Beach Profiling
Coring
Swath Bathymetry and Acoustic Backscatter
Bathymetry
Backscatter
Nearshore (0-10 m) Mapping
Lidar
Groundtruth - Seafloor Photography and Video
Coring and Sampling
Edgetech (chirp) 4-24 kHz
Huntec Boomer Sled 300 Hz – 3 kHz
Water Gun 20 – 1500 Hz
Sparker 50 Hz – 4 kHz
High Resolution, Shallow Penetration
Lower Resolution, Deep Penetration
Edgetech (chirp) 0.5 – 12 kHz
Mutlichannel Airgun
High-resolution Chirp
Seismic Reflection Systems
http://walrus.wr.usgs.gov/mapping/csmp/index.html
http://walrus.wr.usgs.gov/mapping/csmp/progress.html
Progress – California Seafloor Mapping Program
California Seafloor Mapping Program
Hueneme Canyon and Vicinity map folio (1)
Color bathymetry
Gray-scale bathymetry
Acoustic backscatter
Perspective views
“Seafloor Character”
Groundtruthing imagery
Hueneme Canyon and Vicinity map folio (2)
Potential habitats Sediment thickness Geology and Geomorphology
Seismic-reflection data Onshore/Offshore Geology Benthic invertebrates
Data catalog
California Seafloor Mapping Program
Santa Barbara Channel: 4 SIM’s published; 2 in SPN queue Bolinas to Pescadero (31-35)
5 SIM’s in SPN queue
4 SIMs in SPN queue; 2 in PCMSC editing
Into peer review ~ 6/14
Bolinas to Salt Point Ano Nuevo to Marina
California Seafloor Mapping Program
Groundtruthing database for all of State Waters
California Seafloor Mapping Program
CSMP - Groundtruthing database for all of State Waters
Seafloor video and still imagery
Summary - California Seafloor Mapping Progress • Swath mapping nearly (>95%) complete on CA mainland State Waters; Progress mapping offshore islands; much data available on CSUMB web site; SF Bay mapping in fall, 2014 • Video & photo groundtruthing complete on mainland; data available via interactive USGS web site
• High-resolution seismic-reflection data collected for ~60% of CA mainland State Waters; data being made available in USGS Open-File Reports
• Formal (peer reviewed) USGS map publications & databases complete for 4 of 83 mainland coastal blocks; 11 more blocks in the queue for publication; 2 more blocks in final editing; 5 more blocks in preparation
•Coastal LIDAR mapping: New data available for the entire mainland California coastline, including San Francisco Bay (3,779 mi2). Partnership between the California Ocean Protection Council, California Coastal Conservancy, NOAA, USGS, ACOE, and industry partners.
California Seafloor Mapping Program
California Ocean Protection Council
California Coastal Conservancy California Geological Survey
California Dept. of Fish and Game CSUMB Seafloor Mapping Lab
Center for Habitat Studies, MLML Monterey Bay Aquarium Research Institute
Private sector (e.g., Fugro Pelagos, Inc., PG&E) Army Corps of Engineers
NOAA Office of Coast Surveys NOAA National Marine Sanctuaries
NOAA National Marine Fisheries Service NOAA National Geophysical Data Center
NOAA Coastal Services Center Minerals Management Service
National Park Service U.S. Geological Survey Coastal and Marine Geology
Sea floor mapping – why do we care? • Designation of marine protected areas • Defining habitat, ecosystem-based management • Hazard assessments – earthquakes and tsunamis • Regional sediment management • Coastal flooding – storm inundation • Sea-level rise impacts • Baselines for long-term monitoring, climate change • Coastal and Marine Spatial Planning • Siting infrastructure (e.g., renewable ocean energy) • Safer navigation and commerce • Stimulates and enables research • Public education and awareness
You are here
Marine seafloor habitats are as complex as terrestrial habitats
Designation of marine protected areas
Reason 1.
“Big Blue”
Defining and documenting habitat • Document and understand distributional patterns of
marine organisms • Understand the relationship among species, biological
communities, and physical habitat structure • Spatial context for understanding connectivity among
areas and habitats
Reason 2. Ecosystem assessment
Point Saint George
Gray whale foraging scars (1)
Gray whale foraging scars (2)
Reason 3 – Safer navigation & commerce
North coast – 110 new dangers to navigation! “Map once, use many times!”
Reason 4a – Hazards - Earthquake faults Fault characterization • location • length • geometry • slip rate • recurrence interval Site characterization: • soil type and thickness
Revised fault mapping offshore of the Hosgri- San Gregorio Fault zone offshore central CA and Diablo Canyon power plant. Mapping shows prominent fault scarp Offset of ~12,000 year old shoreface indicates fault slip rate of ~2.6 mm/yr
Reason 4b – Hazards, Tsunami sources
Goleta Slide Complex
Santa Barbara Channel
Reason 4b – Hazards -Tsunami sources
Reason 5 – Flooding, storms and tsunamis
Reason 6 – baselines, monitoring change
You can’t monitor or model or manage “it,” if you don’t know what “it” is.
Reason 7 – Regional sediment management
Source to Sink
Reason 7 – Regional sediment management
Offshore development/redevelopment - renewable energy, aquaculture, oil/LNG facilities, sewage outfalls, cables, pipelines, and more
Reason 8 – Marine spatial planning (e.g., siting infrastructure)
Reason 9 – Public education, awareness
Curt Storlazzi
Reason 10 – Inspires and enables research – (academic, government, industry)
Sand waves
Rockfish habitat
Submarine canyons
Active earthquake faults
California Seafloor Mapping Program “This is what success looks like – our national model.”
Looking west under the Golden Gate
Take home messages
• Mapping has numerous important applications, “Map once, use many times.”
• “You can’t manage it, monitor it, or model it, if you don’t know what the “it” is.”
• Seafloor mapping enables fundamental science
• CSMP - Success through partnerships and leveraging