Filters: Tags: Southwest CASC (X) > partyWithName: Karen Thorne, USGS Western Ecological Research Center , Research Ecologist (X)

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Tijuana: Tidal Marsh Digital Elevation Model To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, Sea-Level Rise and Coasts, Southwest CASC, Tijuana, All tags... Water, Coasts and Ice, elevation surveys, salt marsh, Fewer tags Humboldt, California: Tidal Marsh Bathymetry Digital Elevation Model We performed bathymetric surveys using a shallow-water echo-sounding system (Takekawa et al., 2010, Brand et al., 2012) comprised of an acoustic profiler (Navisound 210; Reson, Inc., Slangerup, Denmark), Leica RTK GPS Viva rover, and laptop computer mounted on a shallow-draft, portable flat-bottom boat (Bass Hunter, Cabelas, Sidney, NE; Figure 7). The RTK GPS obtained high resolution elevations of the water surface (reported precision 10 cm water depth. We recorded twenty depth readings and one GPS location each second along transects spaced 100 m apart perpendicular to the nearby salt marsh. We calibrated the system before use with a bar-check plate and adjusted the sound velocity for salinity and temperature differences.... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Bathymetry Survey, Drought, Fire and Extreme Weather, Extreme Weather, Humboldt Bay, Mad River Slough Marsh, All tags... Sea-Level Rise and Coasts, Southwest CASC, Water, Coasts and Ice, Fewer tags San Pablo, California: Tidal Marsh Bathymetry Digital Elevation Models We performed bathymetric surveys using a shallow-water echo-sounding system (Takekawa et al., 2010, Brand et al., 2012) comprised of an acoustic profiler (Navisound 210; Reson, Inc., Slangerup, Denmark), Leica RTK GPS Viva rover, and laptop computer mounted on a shallow-draft, portable flat-bottom boat (Bass Hunter, Cabelas, Sidney, NE; Figure 7). The RTK GPS obtained high resolution elevations of the water surface (reported precision 10 cm water depth. We recorded twenty depth readings and one GPS location each second along transects spaced 100 m apart perpendicular to the nearby salt marsh. We calibrated the system before use with a bar-check plate and adjusted the sound velocity for salinity and temperature differences.... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Bathymetry Survey, Drought, Fire and Extreme Weather, Extreme Weather, San Pablo Bay, Sea-Level Rise and Coasts, All tags... Southwest CASC, Water, Coasts and Ice, Fewer tags San Pablo, California: Tidal Marsh Digital Elevation Model To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Elevation Survey, Extreme Weather, Marsh, San Pablo, All tags... Sea-Level Rise and Coasts, Southwest CASC, Water, Coasts and Ice, Fewer tags SLR Projections, Bolinas, Calif., 2070-2110 We used WARMER, a 1-D cohort model of wetland accretion (Swanson et al., 2014), which is based on Callaway et al. (1996), to examine the effects of three SLR projections on future habitat composition at each study site. Each cohort in the model represents the total organic and inorganic matter added to the soil column each year. WARMER calculates annual elevation changes relative to MSL based on projected changes in relative sea level, subsidence, inorganic sediment accumulation, aboveground and belowground organic matter inputs, soil compaction, and organic matter decomposition for a representative marsh area. Cohort density, a function of soil mineral, organic, and water content, is calculated at each time step... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, SLR modeling, Sea-Level Rise and Coasts, Southwest CASC, All tags... WARMER, Water, Coasts and Ice, Fewer tags Morro Bay, California: Tidal Marsh Digital Elevation Model To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, Morro Bay, Sea-Level Rise and Coasts, Southwest CASC, All tags... Water, Coasts and Ice, elevation surveys, salt marsh, Fewer tags Pt. Mugu, California: Tidal Marsh Digital Elevation Model To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, Pt. Mugu, Sea-Level Rise and Coasts, Southwest CASC, All tags... Water, Coasts and Ice, elevation surveys, salt marsh, Fewer tags SLR Projections, Bolinas, Calif., 2010-2060 We used WARMER, a 1-D cohort model of wetland accretion (Swanson et al., 2014), which is based on Callaway et al. (1996), to examine the effects of three SLR projections on future habitat composition at each study site. Each cohort in the model represents the total organic and inorganic matter added to the soil column each year. WARMER calculates annual elevation changes relative to MSL based on projected changes in relative sea level, subsidence, inorganic sediment accumulation, aboveground and belowground organic matter inputs, soil compaction, and organic matter decomposition for a representative marsh area. Cohort density, a function of soil mineral, organic, and water content, is calculated at each time step... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, SLR modeling, Sea-Level Rise and Coasts, Southwest CASC, All tags... WARMER, Water, Coasts and Ice, Fewer tags SLR Projections, Pt. Mugu, Calif., 2070-2110 We used WARMER, a 1-D cohort model of wetland accretion (Swanson et al., 2014), which is based on Callaway et al. (1996), to examine the effects of three SLR projections on future habitat composition at each study site. Each cohort in the model represents the total organic and inorganic matter added to the soil column each year. WARMER calculates annual elevation changes relative to MSL based on projected changes in relative sea level, subsidence, inorganic sediment accumulation, aboveground and belowground organic matter inputs, soil compaction, and organic matter decomposition for a representative marsh area. Cohort density, a function of soil mineral, organic, and water content, is calculated at each time step... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, SLR modeling, Sea-Level Rise and Coasts, Southwest CASC, All tags... WARMER, Water, Coasts and Ice, Fewer tags Tidal Marsh Vegetation and Elevation Data All of these files are Access Databases that contain RTK elevation survey data and the corresponding vegetation surveys that were conducted concurrently. Over 2,000 intertidal plots were sampled for plant cover, frequency of occurrence, and species richness across the six study sites. Approximately 57 vascular plant species were found in the study, including grasses, rushes, forbs and sedges. Vegetated marsh ranged in elevation from approximately local mean tide level (MTL) to the marsh-upland transition zone (upland plots, defined as areas estimated to flood 1 time per year on average, were not considered for further analysis). We assessed vegetation cover and species richness concurrently with elevation surveys... Categories: Data; Tags: Bodega Bay, Bolinas Lagoon, Drought, Fire and Extreme Weather, Eureka Marsh (Humboldt Bay), Extreme Weather, All tags... Jacoby Marsh (Humboldt Bay), Mad River Low (Humboldt Bay), Mugu Lagoon, Sea-Level Rise and Coasts, Seal Beach, Southwest CASC, Tijuana Estuary, Upper Newport Bay, Water, Coasts and Ice, frequency of occurrence, plant cover, salt marsh, species richness, Fewer tags SLR Projections, Tijuana, Calif., 2010-2060 We used WARMER, a 1-D cohort model of wetland accretion (Swanson et al., 2014), which is based on Callaway et al. (1996), to examine the effects of three SLR projections on future habitat composition at each study site. Each cohort in the model represents the total organic and inorganic matter added to the soil column each year. WARMER calculates annual elevation changes relative to MSL based on projected changes in relative sea level, subsidence, inorganic sediment accumulation, aboveground and belowground organic matter inputs, soil compaction, and organic matter decomposition for a representative marsh area. Cohort density, a function of soil mineral, organic, and water content, is calculated at each time step... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, SLR modeling, Sea-Level Rise and Coasts, Southwest CASC, All tags... WARMER, Water, Coasts and Ice, Fewer tags Humboldt, California: Tidal Marsh Digital Elevation Model To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, Humboldt Bay, Sea-Level Rise and Coasts, Southwest CASC, All tags... Water, Coasts and Ice, elevation surveys, salt marsh, Fewer tags Tidal Marsh Surface Elevation Table data All of these files are Microsoft Excel format files that contain Surface Elevation Table (SET) data. We installed deep rod surface elevation tables (SETs) to quantify the relative contributions of surface and subsurface processes to present-day elevation change (i.e., root growth, decomposition, compaction, water flux), shallow subsidence (accretion – elevation), and shallow subsidence between shallow (root zone) and deeper (to >10 m) portions of the soil profile. We installed four SETs at each marsh site, following methods described by Cahoon et al. 2002 and Webb et al., 2013. We established two SETs in low marsh and two in high marsh at each site after visual assessment of vegetation composition and distance from... Categories: Data; Types: Citation; Tags: Bodega Bay, Bolinas Lagoon, Drought, Fire and Extreme Weather, Eureka Marsh (Humboldt Bay), Extreme Weather, All tags... Jacoby Marsh (Humboldt Bay), Mad River Low (Humboldt Bay), Mugu Lagoon, Sea-Level Rise and Coasts, Seal Beach, Southwest CASC, Tijuana Estuary, Upper Newport Bay, Water, Coasts and Ice, salt marsh, shallow subsidence, surface elevation table, Fewer tags Bolinas, Tidal Marsh Elevation Points To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bolinas Lagoon, Drought, Fire and Extreme Weather, Extreme Weather, Sea-Level Rise and Coasts, Southwest CASC, All tags... Water, Coasts and Ice, elevation surveys, salt marsh, Fewer tags SLR Projections, Humboldt, Calif., 2070-2110 We used WARMER, a 1-D cohort model of wetland accretion (Swanson et al., 2014), which is based on Callaway et al. (1996), to examine the effects of three SLR projections on future habitat composition at each study site. Each cohort in the model represents the total organic and inorganic matter added to the soil column each year. WARMER calculates annual elevation changes relative to MSL based on projected changes in relative sea level, subsidence, inorganic sediment accumulation, aboveground and belowground organic matter inputs, soil compaction, and organic matter decomposition for a representative marsh area. Cohort density, a function of soil mineral, organic, and water content, is calculated at each time step... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, SLR modeling, Sea-Level Rise and Coasts, Southwest CASC, All tags... WARMER, Water, Coasts and Ice, Fewer tags SLR Projections, Pt. Mugu, Calif., 2010-2060 We used WARMER, a 1-D cohort model of wetland accretion (Swanson et al., 2014), which is based on Callaway et al. (1996), to examine the effects of three SLR projections on future habitat composition at each study site. Each cohort in the model represents the total organic and inorganic matter added to the soil column each year. WARMER calculates annual elevation changes relative to MSL based on projected changes in relative sea level, subsidence, inorganic sediment accumulation, aboveground and belowground organic matter inputs, soil compaction, and organic matter decomposition for a representative marsh area. Cohort density, a function of soil mineral, organic, and water content, is calculated at each time step... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, SLR modeling, Sea-Level Rise and Coasts, Southwest CASC, All tags... WARMER, Water, Coasts and Ice, Fewer tags SLR Projections, Tijuana, Calif., 2070-2110 We used WARMER, a 1-D cohort model of wetland accretion (Swanson et al., 2014), which is based on Callaway et al. (1996), to examine the effects of three SLR projections on future habitat composition at each study site. Each cohort in the model represents the total organic and inorganic matter added to the soil column each year. WARMER calculates annual elevation changes relative to MSL based on projected changes in relative sea level, subsidence, inorganic sediment accumulation, aboveground and belowground organic matter inputs, soil compaction, and organic matter decomposition for a representative marsh area. Cohort density, a function of soil mineral, organic, and water content, is calculated at each time step... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, SLR modeling, Sea-Level Rise and Coasts, Southwest CASC, All tags... WARMER, Water, Coasts and Ice, Fewer tags SLR Projections, Newport, Calif., 2010-2060 We used WARMER, a 1-D cohort model of wetland accretion (Swanson et al., 2014), which is based on Callaway et al. (1996), to examine the effects of three SLR projections on future habitat composition at each study site. Each cohort in the model represents the total organic and inorganic matter added to the soil column each year. WARMER calculates annual elevation changes relative to MSL based on projected changes in relative sea level, subsidence, inorganic sediment accumulation, aboveground and belowground organic matter inputs, soil compaction, and organic matter decomposition for a representative marsh area. Cohort density, a function of soil mineral, organic, and water content, is calculated at each time step... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Drought, Fire and Extreme Weather, Extreme Weather, SLR modeling, Sea-Level Rise and Coasts, Southwest CASC, All tags... WARMER, Water, Coasts and Ice, Fewer tags Tijuana, Tidal Marsh Elevation Points To assess the current topography of the tidal marshes we conducted survey-grade elevation surveys at all sites between 2009 and 2013 using a Leica RX1200 Real Time Kinematic (RTK)Global Positioning System (GPS) rover (±1 cm horizontal, ±2 cm vertical accuracy; Leica Geosystems Inc., Norcross, GA; Figure 4). At sites with RTK network coverage (San Pablo, Petaluma, Pt. Mugu, and Newport), rover positions were received in real time from the Leica Smartnet system via a CDMA modem (www.lecia-geosystems.com). At sites without network coverage (Humboldt, Bolinas, Morro and Tijuana), rover positions were received in real time from a Leica GS10 antenna base station via radio link. When using the base station, we adjusted... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Drought, Fire and Extreme Weather, Extreme Weather, Sea-Level Rise and Coasts, Southwest CASC, Tijuana, All tags... Water, Coasts and Ice, elevation surveys, salt marsh, Fewer tags Newport, California: Tidal Marsh Bathymetry Digital Elevation Models We performed bathymetric surveys using a shallow-water echo-sounding system (Takekawa et al., 2010, Brand et al., 2012) comprised of an acoustic profiler (Navisound 210; Reson, Inc., Slangerup, Denmark), Leica RTK GPS Viva rover, and laptop computer mounted on a shallow-draft, portable flat-bottom boat (Bass Hunter, Cabelas, Sidney, NE; Figure 7). The RTK GPS obtained high resolution elevations of the water surface (reported precision 10 cm water depth. We recorded twenty depth readings and one GPS location each second along transects spaced 100 m apart perpendicular to the nearby salt marsh. We calibrated the system before use with a bar-check plate and adjusted the sound velocity for salinity and temperature differences.... Categories: Data; Types: Citation, Downloadable, GeoTIFF, Map Service, Raster; Tags: Bathymetry Survey, Drought, Fire and Extreme Weather, Extreme Weather, Newport, Sea-Level Rise and Coasts, All tags... Southwest CASC, Water, Coasts and Ice, Fewer tags 1 2 »