Mark With No Description To Reach It

[+Klemmer]

I sort of thought it was an NGS requirement for a text description of how to reach a monumented mark. AB5034 Doesn't. OK, it appears to be GPS located, so I'm sure the coords are accurate. However, the route to get there is sometimes necessary or at least helpful. Uhhh... should there be one??? Should I submit one to NGS if I recover this mark? Extra "points" for finding one without a description??

 

BTW: Anyone know what a PGGA station is? Sounds like a golf mark?

Edited February 19, 2005 by Klemmer & TeddyBearMama

[CallawayMT]

I sort of thought it was an NGS requirement for a text description of how to reach a monumented mark.  AB5034 Doesn't.  OK, it appears to be GPS located, so I'm sure the coords are accurate.  However, the route to get there is sometimes necessary or at least helpful.  Uhhh...  should there be one???  Should I submit one to NGS if I recover this mark?  Extra "points" for finding one without a description?? 

 

BTW:  Anyone know what a PGGA station is?  Sounds like a golf mark?

Klemmer,

 

If you have never seen an active CORS station, then you would want to go see AB5034. What you will find is a GPS base station, you may not even be able to see the actual metal rod. It is possibly covered by a concrete base or some other permanent mounting station for the CORS station. The construction of these is variable and there are numerous configurations to the setup.

 

You will see these types of weak descriptions on these stations, because they are not meant to be visited. They are simply sitting there collecting data 24 hours a day.

 

You can look at PID's AI5647 and AI7660 for a couple examples.

 

CallawayMT

Edited February 19, 2005 by CallawayMT

[+Klemmer]

Thanks, CMT. I actually do know what a CORS station is (there is a lot closer one at a county yard nearby). I guess I missed that it was a CORS station. UHHH... On second & third looks, I'm still missing it. Where in the Datasheet does it say it's a CORS station? I'm looking at the NGS datasheet, not the GC "extraction". Maybe I'm just having a bad eye day, but.... Does PGGA = CORS? I may have realized it if they had said HARMS also. Sorry for sounding / being a little dense.

Thanks.

[Z15]

PGGA = PERMANENT GPS GEODETIC ARRAY

 

 

Go Here for more info

 

TRAK Site Information Form (site log)

International GPS Service

See Instructions at:

ftp://igscb.jpl.nasa.gov/pub/station/gene...telog_instr.txt

 

1. Site Identification of the GNSS Monument

 

Site Name : Bommer Canyon

Four Character ID : TRAK

Monument Inscription :

IERS DOMES Number : 40480M001

CDP Number : (A4)

Monument Description : (PILLAR/BRASS PLATE/STEEL MAST/etc)

Height of the Monument: (m)

Monument Foundation : (STEEL RODS/CONCRETE BLOCK/ROOF/etc)

Foundation Depth : (m)

Marker Description : punched hole in top of rod

Date Installed : 1994-06-02T00:00Z

Geologic Characteristic : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc)

Bedrock Type : (IGNEOUS/METAMORPHIC/SEDIMENTARY)

Bedrock Condition : (FRESH/JOINTED/WEATHERED)

Fracture Spacing : (1-10 cm/10-50 cm/50-200 cm/over 200 cm)

Fault Zones Nearby : (YES/NO/Name of the zone)

Distance/activity : (multiple lines)

Additional Information : SCIGN - Southern California Integrated GPS

: Network single 5/8 in. diameter, 14 in.

: stainless steel rod driven into sandstone rock

: outcropping

 

 

On-Site, Point of Contact Agency Information

 

Agency : Scripps Orbit and Permanent Array Center

Preferred Abbreviation : (A10)

Mailing Address : Institute of Geophysics and Planetary Physics,

: Scripps Institution of Oceanography, MC 0225,

: University of California San Diego, 9500

: Gilman Dr., La Jolla CA 92093-0225

Primary Contact

Contact Name : Paul Jamason

Telephone (primary) : 858-822-4472

Telephone (secondary) : 858-663-3508

Fax : 858-534-9873

E-mail : pjamason@ucsd.edu

Secondary Contact

Contact Name : Keith Stark

Telephone (primary) : 626-583-6729

Telephone (secondary) : 818-542-5930

Fax : 626-583-7827

E-mail : stark@gps.caltech.edu

Additional Information :

: (Secondary) SCIGN Network Coordinator

 

 

 

JPL-NASA

TRAK Site

 

The World Wide Network

Edited February 19, 2005 by elcamino

[CallawayMT]

Thanks, CMT.  I actually do know what a CORS station is (there is a lot closer one at a county yard nearby).  I guess I missed that it was a CORS station.  UHHH...  On second & third looks, I'm still missing it.  Where in the Datasheet does it say it's a CORS station?  I'm looking at the NGS datasheet, not the GC "extraction".  Maybe I'm just having a bad eye day, but....  Does PGGA = CORS?  I may have realized it if they had said HARMS also.  Sorry for sounding / being a little dense.

Thanks.

elcamino found the real information for you, but I checked the data sheet and found:

AB5035

which is a reference for AB5034. AB5035 is the phase center for the GPS station.

 

CallawayMT

[+Klemmer]

Got the picture now. PGGA / IGS is sort of a super CORS, for the serious worldwide scientific types. I think our daughter may use their data for her GIS work (fancy big bucks BML owned Trimble backpack type GPSr she uses in her work). I still say that the datasheet could have been a little clearer. Thanks for the education! Learn something every day. Good for you!

[Z15]

I found pictures of the TRAK site

 

Found the link on this >>>>>SITE<<<<<

 

The monument you were talking about is on that page, shows a plumb bob over the rod.. check it out, kind of hard to recover it.

Edited February 20, 2005 by elcamino

[reidster]

Although I am still learning, I found a bit more info regarding PID AB5034. The actual PID for the CORS mark is AI4508. Information for this location, "TRAK", can be found on the California Spatial Reference Center (CSRC) site. ( http://csrc.ucsd.edu/cdp/ , From the NGS site, click on CORS, then select California CORS).