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Arc Files:
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Digital Data:
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Metadata:
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Notes
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CP199CA Misc. Notes
There appears to be a slight problem with the horizontal control for this
beach. The observed coordinates generated by the Geodimeter following
Program 20 are slightly high compared to the spread of the surveyed
Control Points. I suggest we take a closer look at the GPS data to
see if there was a problem. Control Point 11203 is no longer in
existence; an El Nino storm took it away. The numbering
convention for the shore-normal lines was continued
from previous surveys.
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Overview
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CP199CA Metropolitan Santa Cruz Beach Surveys
Capitola Beach, Capitola, CA
13 January 1999, 1130 to1230 (PST)
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Synopsis
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A beach and nearshore topographic survey consisting of three shore-normal
profiles and one shore-parallel line (wet/dry line) was conducted. The
profiles were extended offshore into the surf zone utilizing a
swimming rodman.
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Total Station Location
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Geographic Coordinates
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(WGS84 Ellipsoid, NAD83 datum, NAVD88 Elevation
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datum)
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Latitude
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+36.96971 (N 36deg 58m 10.943961s)
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Longitude
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-121.95564 (W 121deg 57m 20.298830s)
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Elevation
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20.125 m
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UTM Coordinates
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(Zone 10N, WGS84 Ellipsoid, NAD83 datum, NAVD88
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Elevation datum)
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Northing
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4092021.390 m
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Easting
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592961.462 m
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Elevation
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20.125 m
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Surveying Conditions
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Skies
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clear, low stratus on the horizon
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Temperature
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71.2 deg F
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Barometric Pressure
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30.00 in HG
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Wind
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~ 5 kts out of the west
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Precipitation
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none
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Sea State
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1-2' breaking waves
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Optical Siting
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good, no heat shimmer
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Geodetics Equipment
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Geodimeter 640 Total Station
Autolock and Robotic capabilities
Internal memory only
SCRUZ.ARE file resident in memory
Instrument Height meter
Wild tripod (wood)
12-volt gel cell battery
Stadia rods:
SECO RWLR-4, w/EXTR (combined height: 1.572 m)
SECO BWLR-4, w/EXTB (combined height: 1.573 m)
Mound City EXP3, w/hydro (combined heights: 1.701 m, 3.096 m, and 4.545 m)
Seco Level Rod support tripods (two)
Standard UHF Radios (two)
Kodak DC120 Digital Camera
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Field Procedure
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The total station was set up on Control Point 11201
"GL SETUP". This location, although very distant from the
beach, has a commanding view of the entire beach and
nearshore region. The HA reference was set to 000d
relative to Control Point 11205 "Esplanade".
The SECO level rods, in conjunction with the level-rod
support tripods were placed on the control points and pointed
towards the total station.
Program 10 (site setup) was performed on the total station
Program 20 (station establishment) was performed on the
total station using option "Known Station Location",
utilizing Control Point 11201 as the station location and
Control Point 11205 as the known reference object.
Program 4 (UTM) was used to collect control and topo points
Control Points: 11205, 11202, and 11204 were surveyed (Fast Standard mode)
The Profile SN2 was surveyed using the EXP3 stadia rod
(Tracking mode) and carried offshore into the surf zone.
Due to the gently sloping nature of the offshore bathymetry,
the profile was terminated at the intermediate maximum limit
of the EXP3 stadia rod.
The Wet/Dry line was surveyed using the EXP3 stadia rod (Tracking mode)
The Profiles SN1A and SN1 were surveyed using the EXP3
stadia rod (Tracking mode) and carried offshore into the surf
zone. Due to the gently sloping nature of the offshore
bathymetry, the profile was terminated at the intermediate
maximum limit of the EXP3 stadia rod.
Gretchen Luepke sketched the beach and assisted with the control points.
Thomas E. Reiss took written notes and photographed the area.
Kristin M. Brown operated the total station.
Justin Friesner was the rodman.
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Field Observations
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This beach is bordered on the west by natural rock cliffs with
shore-protective rip-rap rocks at their base. The Esplanade
backs the beach to the north. Rip-rap and a seawall define
the east end of the beach. The Capitola Pier is also a
prominent feature, cutting the beach into roughly 1/4
- 3/4 segments. A stream (river) runs through the
town, cuts across the beach and empties into the
ocean. This stream plays a major role in
defining the beach and nearshore
morphology. During periods of
heavy winter rain storms,
debris and sediment
carried down by the
river will create a
delta in the
nearshore region. No indication of a delta was evident today.
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Post-processing
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Survey data was downloaded from the Total Station memory, automatically
creating a RAW file and an associated JOB file.
The RAW file was used to generate a PTS file (UTM field coordinates are
extracted from the RAW file) Note: no recalculation was performed on
the original file).
PFCODE.EXE was used on the JOB file to generate an ED file.
The ED file was edited to include necessary Program 10 information, POINTS
block listing, and INFO codes. Field procedures were checked and corrected
as necessary.
PFGD.EXE was used on the ED file to generate a PF file (Cartesian-based,
relative XYZ coordinates).
Extraneous comment lines were removed from the PF file to generate a DAT
file (relative XYZ coordinates).
Data values from the DAT file were put into GRIDCON.XLS (CAPITOLA.XLS,
sheet 990113C) to convert the relative XYZ data (Cartesian system) to UTM.
UTM values were extracted from CAPITOLA.XLS (UTM file) and compared to
field observations (PTS file) to check for discrepancies.
UTM data was plotted in plan and profile views using SigmaPlot (v. 4.0).
Digital images were inserted into an MS WORD document (990113C1.DOC,
990113C2.DOC and 990113C3.DOC) and summarily described (IMAGE.TXT file).
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Precision and Accuracy of Acquired Data
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Program 20 (Station Establishment)
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Northing: 0.001 m
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Easting: 0.001 m
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Combined: 0.001 m
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Elevation: 0.001 m
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Siting on Control Points: (distance dependent, based on spread of values)
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Horizontal: < 0.018 m
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Vertical: < 0.020 m
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Observed Accuracy of Control Points: (field observations as compared to GPS derived positions)
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Northing: < 0.082 m
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Easting: < 0.124 m
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Elevation: < 0.025 m
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Siting on topo points: (distance dependent, extension dependent, hand-held stadia)
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Horizontal: ~ 0.2 m
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Vertical: ~ 0.04 m
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Generated Files
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990113C.RAW
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Original data file from the Geodimeter
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(linear format of polar coordinate data)
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990113C.JOB
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Geotools generated observation file
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(similar in format to the RAW file)
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990113C.PTS
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Geotools extracted listing of field
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observed UTM coordinates (from RAW file)
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990113C.ED
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PFCODE.EXE generated file (tabular format
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of polar coordinate data, from JOB file)
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990113C.PF
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PFGD.EXE output file (from ED file)
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990113C.DAT
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XYZ data, relative grid (Geodimeter as
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origin)
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990113C.UTM
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Excel algorithm generated UTM coordinates
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990113C.JNB
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SigmaPlot (v. 4.0) graphics file showing
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plan and profile views of UTM data
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990113C.DOC
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This document file (MS WORD file)
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990113C.TXT
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This document in ASCII format
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99011325.KDC to 99011342.KDC
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digital images, Kodak format
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99011325.JPG to 99011342.JPG
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digital images, JPEG format (see attached
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descriptions)
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990113C1.DOC, 990113C2.DOC, and 990113C2.DOC
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Digital image files (JPEG images with
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descriptions)
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IMAGE.TXT
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Descriptions of digital images taken on
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this day
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990113_LOG.XLS, sheet 990113C
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Excel sheet detailing survey operations
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CAPITOLA.XLS, sheet 990113C
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Excel sheet of relative coordinates to UTM
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data conversion
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Images Taken
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e following images were taken with a Kodak DC120 Digital camera.
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99011325: View from Control Point SCRUZ.ARE/11201
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L Set-up", looking northeast towards the town of Capitola.
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99011326: View from Control Point SCRUZ.ARE/11201
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L Set-up", looking northeast towards the town of Capitola.
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me image as 99011325, however taken with a lighter exposure.
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99011327: Close-up view of the east side of Capitola Beach,
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ken from Control Point SCRUZ.ARE/11201 "GL Set-up", looking
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st-northeast. The Capitola pier is seen in the foreground.
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99011328: Close-up view of Capitola Beach, taken from
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ntrol Point SCRUZ.ARE/11201 "GL Set-up", looking
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rth-northeast. The base of the Capitola pier is seen in the
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reground.
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99011329: Close-up view of the cliff that backs Capitola
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ach on the west end. Image taken from Control Point
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RUZ.ARE/11201 "GL Set-up", looking north.
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99011330 (011330r): Kristin M. Brown (UCSC graduate student) operating the Geodimeter 640 at Capitola Beach.
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e total station is typically set up over Control Point SCRUZ.ARE/11201 "GL Set-up".
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99011331: Kristin M. Brown (UCSC graduate student) conversing with an interested onlooker. Image taken at Control Point SCRUZ.ARE/11201 "GL Set-up", looking east-northeast.
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99011332 (011332r): BWLR-4, w/EXTB set up on Control Point SCRUZ.ARE/11202 "Cliff". View looking northeast.
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99011333: Close-up view of Control Point SCRUZ.ARE/11202 "Cliff". The control point is a survey nail pounded into an asphalt curb.
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99011334 (011334r): BWLR-4, w/EXTB set up on Control Point SCRUZ.ARE/11202 "Cliff". View looking northeast.
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99011335: RWLR-4, w/EXTR set up on Control Point SCRUZ.ARE/11204 "On Line". G
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tchen Luepke, Thomas E. Reiss, and Justin Friesner seen sitting on the Esplanade wall. View looking south.
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99011336: RWLR-4, w/EXTR set up on Control Point SCRUZ.ARE/11204 "On Line". Gretchen Luepke, Thomas E. Reiss, and Justin Friesner seen sitting on the Esplanade wall.
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99011337: Close-up view of Control Point SCRUZ.ARE/11204 "On Line". This control point is a brass
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nument cemented into a drill-hole, mounted flush with the concrete surface.
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99011338 (011338r): RWLR-4, w/EXTR set up on Control Point SCRUZ.ARE/11204 "On Line". View looking north. Note the street intersection in the background.
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99011339 (011339r): View of Capitola Beach, looking south from the Esplanade. The river that cuts across the beach can be seen in the middle of the image.
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99011340: View of Capitola Beach, looking west from the berm crest.
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e river that cuts across the beach can be seen in the middle of the image and the Capitola Pier in the background.
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99011341: View of Capitola Beach, looking west from mid-backbeach.
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e river that cuts across the beach can be seen in the middle of the image and the Capitola Pier in the background.
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99011342: View of Capitola Beach, looking east from mid-backbeach.
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e river that cuts across the beach can be seen in the middle of the image. A 1.5-m river-cut scarp backs the east end of the beach.
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No analog holdings.
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