Santa Cruz

October 2016 bathymetry (NAVD88) of Coyote Creek and Alviso Slough, South San Francisco Bay, California

A GIS polygon shapefile outlining the region where we experienced IMU problems during the October 2012 survey. During post-processing of the October 2012 survey tie line analyses revealed a depth-bias in lines collected on the western intertidal flats on October 19th. The cause of this bias is uncertain; however it may be the result of an imprecise IMU position calibration on that day. These intertidal flat survey lines collected on October 19th were shoaled by 8 cm to minimize offsets between tie lines. After the shift was applied the mean difference of tie line intersections for this survey was 2 cm (SD = 4). Note that Guadalupe Slough was also surveyed on October 19th, but data within the slough did not appear to show the same offset as soundings within the flats, and as a result, were not adjusted. Although our best effort was made to correct these data, the accuracy of elevations within these polygons is less reliable than for the remainder of these datasets.

April 2015 bathymetry (WGS84) of Coyote Creek and Alviso Slough, South San Francisco Bay, California

A GIS polygon shapefile outlining the region where we experienced IMU problems during the October 2012 survey. During post-processing of the October 2012 survey tie line analyses revealed a depth-bias in lines collected on the western intertidal flats on October 19th. The cause of this bias is uncertain; however it may be the result of an imprecise IMU position calibration on that day. These intertidal flat survey lines collected on October 19th were shoaled by 8 cm to minimize offsets between tie lines. After the shift was applied the mean difference of tie line intersections for this survey was 2 cm (SD = 4). Note that Guadalupe Slough was also surveyed on October 19th, but data within the slough did not appear to show the same offset as soundings within the flats, and as a result, were not adjusted. Although our best effort was made to correct these data, the accuracy of elevations within these polygons is less reliable than for the remainder of these datasets.

April 2016 bathymetry (MLLW) of Coyote Creek and Alviso Slough, South San Francisco Bay, California

A GIS polygon shapefile outlining the region where we experienced IMU problems during the October 2012 survey. During post-processing of the October 2012 survey tie line analyses revealed a depth-bias in lines collected on the western intertidal flats on October 19th. The cause of this bias is uncertain; however it may be the result of an imprecise IMU position calibration on that day. These intertidal flat survey lines collected on October 19th were shoaled by 8 cm to minimize offsets between tie lines. After the shift was applied the mean difference of tie line intersections for this survey was 2 cm (SD = 4). Note that Guadalupe Slough was also surveyed on October 19th, but data within the slough did not appear to show the same offset as soundings within the flats, and as a result, were not adjusted. Although our best effort was made to correct these data, the accuracy of elevations within these polygons is less reliable than for the remainder of these datasets.

March 2017 bathymetry (MLLW) of Coyote Creek and Alviso Slough, South San Francisco Bay, California

A GIS polygon shapefile outlining the region where we experienced IMU problems during the October 2012 survey. During post-processing of the October 2012 survey tie line analyses revealed a depth-bias in lines collected on the western intertidal flats on October 19th. The cause of this bias is uncertain; however it may be the result of an imprecise IMU position calibration on that day. These intertidal flat survey lines collected on October 19th were shoaled by 8 cm to minimize offsets between tie lines. After the shift was applied the mean difference of tie line intersections for this survey was 2 cm (SD = 4). Note that Guadalupe Slough was also surveyed on October 19th, but data within the slough did not appear to show the same offset as soundings within the flats, and as a result, were not adjusted. Although our best effort was made to correct these data, the accuracy of elevations within these polygons is less reliable than for the remainder of these datasets.

February 2012 bathymetry (MLLW) of Coyote Creek and Alviso Slough, South San Francisco Bay, California

A GIS polygon shapefile outlining the region where we experienced IMU problems during the October 2012 survey. During post-processing of the October 2012 survey tie line analyses revealed a depth-bias in lines collected on the western intertidal flats on October 19th. The cause of this bias is uncertain; however it may be the result of an imprecise IMU position calibration on that day. These intertidal flat survey lines collected on October 19th were shoaled by 8 cm to minimize offsets between tie lines. After the shift was applied the mean difference of tie line intersections for this survey was 2 cm (SD = 4). Note that Guadalupe Slough was also surveyed on October 19th, but data within the slough did not appear to show the same offset as soundings within the flats, and as a result, were not adjusted. Although our best effort was made to correct these data, the accuracy of elevations within these polygons is less reliable than for the remainder of these datasets.

Polygon shapefile outlining the region where we experienced Inertial Measurement Unit (IMU) problems during the October 2011 survey.

A GIS polygon shapefile outlining the region where we experienced IMU problems during the October 2012 survey. During post-processing of the October 2012 survey tie line analyses revealed a depth-bias in lines collected on the western intertidal flats on October 19th. The cause of this bias is uncertain; however it may be the result of an imprecise IMU position calibration on that day. These intertidal flat survey lines collected on October 19th were shoaled by 8 cm to minimize offsets between tie lines. After the shift was applied the mean difference of tie line intersections for this survey was 2 cm (SD = 4). Note that Guadalupe Slough was also surveyed on October 19th, but data within the slough did not appear to show the same offset as soundings within the flats, and as a result, were not adjusted. Although our best effort was made to correct these data, the accuracy of elevations within these polygons is less reliable than for the remainder of these datasets.

February 2012 bathymetry (NAVD88) of Coyote Creek and Alviso Slough, South San Francisco Bay, California

A GIS polygon shapefile outlining the region where we experienced IMU problems during the October 2012 survey. During post-processing of the October 2012 survey tie line analyses revealed a depth-bias in lines collected on the western intertidal flats on October 19th. The cause of this bias is uncertain; however it may be the result of an imprecise IMU position calibration on that day. These intertidal flat survey lines collected on October 19th were shoaled by 8 cm to minimize offsets between tie lines. After the shift was applied the mean difference of tie line intersections for this survey was 2 cm (SD = 4). Note that Guadalupe Slough was also surveyed on October 19th, but data within the slough did not appear to show the same offset as soundings within the flats, and as a result, were not adjusted. Although our best effort was made to correct these data, the accuracy of elevations within these polygons is less reliable than for the remainder of these datasets.

February 2012 bathymetry (WGS84) of Coyote Creek and Alviso Slough, South San Francisco Bay, California

A GIS polygon shapefile outlining the region where we experienced IMU problems during the October 2012 survey. During post-processing of the October 2012 survey tie line analyses revealed a depth-bias in lines collected on the western intertidal flats on October 19th. The cause of this bias is uncertain; however it may be the result of an imprecise IMU position calibration on that day. These intertidal flat survey lines collected on October 19th were shoaled by 8 cm to minimize offsets between tie lines. After the shift was applied the mean difference of tie line intersections for this survey was 2 cm (SD = 4). Note that Guadalupe Slough was also surveyed on October 19th, but data within the slough did not appear to show the same offset as soundings within the flats, and as a result, were not adjusted. Although our best effort was made to correct these data, the accuracy of elevations within these polygons is less reliable than for the remainder of these datasets.

October 2011 bathymetry (MLLW) of Coyote Creek and Alviso Slough, South San Francisco Bay, California

A GIS polygon shapefile outlining the region where we experienced IMU problems during the October 2012 survey. During post-processing of the October 2012 survey tie line analyses revealed a depth-bias in lines collected on the western intertidal flats on October 19th. The cause of this bias is uncertain; however it may be the result of an imprecise IMU position calibration on that day. These intertidal flat survey lines collected on October 19th were shoaled by 8 cm to minimize offsets between tie lines. After the shift was applied the mean difference of tie line intersections for this survey was 2 cm (SD = 4). Note that Guadalupe Slough was also surveyed on October 19th, but data within the slough did not appear to show the same offset as soundings within the flats, and as a result, were not adjusted. Although our best effort was made to correct these data, the accuracy of elevations within these polygons is less reliable than for the remainder of these datasets.