Usage

Single Point

• The coordinates for a single location can be entered individually or by clicking on the map (latitude; east longitude).
• Input and output dates can be entered directly and the format can be specified in the dropdown menus.

List of Points

Multiple locations can be specified by inserting or uploading CSV data with a header and a line for each point.
Supported datums are WGS84, ITRF(2014), NAD83(2011), and NAD83(NSRS2007).

1. Start with a header and declare format and date options:
   Input Datum, Output Datum, Date, Lat/Lon Format*, Height Units* (optional), T-in, T-out (*WGS84 and NAD83 input only)
   
2. Begin each point on a new line, starting with a name or ID for the point, followed by lat, lon, (ellipsoidal height optional) or X,Y,Z.
3. To translate ellipsoidal height, include units in the header, as in example 3.

Example 1:

WGS84, WGS84, Day of Year, Decimal, 2018 151, 2011 171
SIO5, 32.84073613, -117.24969349,

• The above example translates the point (32.84073613, -117.24969349) from 2018 day 151 to 2011 day 171.
• Output coordinates are in WGS84 lat, lon, height.
• Note that in the header there is only a space between the year and the day of year.

Example 2:

ITRF(2014), WGS84, Calendar Date, 2018-01-01, 2014-01-01,
Ex. 2, -2369882.4184, -4439958.0764, 3905231.4647,

• The above example translates the XYZ coordinates (-2369882.4184, -4439958.0764, 3905231.4647) from 2018-01-01 to 2014-01-01.
• Output coordinates are in WGS84 lat, lon, height.
• Note the calendar date format and delimeter '-'. Trailing commas are ignored.

Example 3:

NAD83(NSRS2007), NAD83(2011), Decimal Year, Degrees Minutes Seconds, Meters, 2017.5, 2013.8,
Height example, 36 10 8.12, -119 7 29.134, 301,

• The above example translates the NAD83(NSRS2007) coordinates 36˚10'8.12", -119˚7'29.134" at a height of 301 meters from 2017.5 to 2013.8.
• Output coordinates are in NAD83(2011).

Reference Frames

There are four reference frames supported by SCIP:

1. ITRF2014: IGb14 realization of ITRF2014 - https://lists.igs.org/pipermail/igsmail/2020/007917.html
2. WGS84: Transformation from ITRF2014 XYZ coordinates to geodetic latitude, longitude and height using WGS84 ellipsoid values: a = 6378137 meters; 1/f = 298.257223563.
3. NAD83(2011): NAD83 system used for CSRS Epoch 2017.5 - http://sopac-csrc.ucsd.edu/index.php/epoch1017/
4. NAD83(NSRS2007): NAD83 system used for CSRS Epoch 2011.0 - http://csrc-old.ucsd.edu/docs/csrsEpoch1011.00.xls

References

Geodetic Datums – Scripps Orbit and Permanent Array Center (Scroll to Dynamic Datums)

Klein, K., Y. Bock, X. Xu, D. Sandwell, D. Golriz, P. Fang, L. Su (2019), Transient deformation in California from two decades of GPS displacements: Implications for a three-dimensional kinematic reference frame, J. Geophys. Res., https://doi.org/10.1029/2018JB017201

Contact

We value your feedback!

SCIP is under active development. Please contact us with any questions, comments, or bug reports.

Contact Name	Email	Role
Alistair Knox	saknox@ucsd.edu	SCIP Developer
Yehuda Bock	ybock@ucsd.edu	SOPAC Director