Gmail - FW: Bridgeport gravity data.
1/19/15, 9:32 PM
John Louie <[email protected]>
FW: Bridgeport gravity data.
Chad Carlson <[email protected]>
To: John Louie <[email protected]>
Wed, Jan 7, 2015 at 11:18 AM
Dr. Louie,
Attached are the files from Rick's and my gravity measurement collection around the Bridgeport area (Summer 2012).
I am will have a copy of these files archived, should something happen to them. The "station_location_map" (pdf) will
give you a general idea of where we sampled, and includes one day that I was not in the field with Rick, for your
course logistics. I would like to be a part of the processing of this data when the time comes, for my purpose of gaining
a better understanding of gravity data. I will be planning to go to Menlo Park, in the not too distant future, to try my
hand at reducing the data utilizing their software. I would like to get together with you and go over what we have been
given by Rick, when you have time.
I also plan on attending your first course meeting, along with other meetings periodically, if that is OK. Please let me
know the time and place of your first class, and/or feel free to include me in course emails.
Respectfully,
Chad Carlson
Date: Wed, 7 Jan 2015 07:58:39 -0800
Subject: Re: Bridgeport gravity data.
From: [email protected]
To: [email protected]
Chad-The following files are attached...
bodie_2012_fieldnotes.pdf = Scanned field notes
location_map.jpg = Station location map
three_days_in_one_excel_file.xlsx = All raw data, no editing, coordinates from GPS post-processing
Bodie.tpo = Tracks and stations (new and old) on USGS topo maps. Requires Topo! and all topographic data.
The following three files are from my GPS post processing. These files are used in our gravity data reduction
software, so they won't be of much use to you in this format without the software. I'm sending them to you just for
completeness.
BODIE060712.inp = Raw data, day 3, GPS post processed
BODIE060612.inp = Raw data, day 2, GPS post-processed
BODIE_060512.inp = Raw data, day 1, GPS post-processed
The important channels in *.inp are: latitude degrees, latitude minutes, longitude degrees, longitude minutes,
elevation, station name, date of reading, GPS time, meter reading, time of reading, inner zone terrain correction.
If it would be helpful, consider driving over the mountains to Menlo Park and reducing the data yourself. Might be
instructive.
Rick
https://mail.google.com/mail/u/0/?ui=2&ik=6cde8c4c21&view=pt&search=inbox&msg=14ac5d56a3784702&siml=14ac5d56a3784702
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Gmail - FW: Bridgeport gravity data.
1/19/15, 9:32 PM
Richard J. Blakely
U.S. Geological Survey
345 Middlefield Rd
Menlo Park, CA 94025
On Tue, Jan 6, 2015 at 4:22 PM, Chad Carlson <[email protected]> wrote:
Rick,
If you have the field sheets in a digital form, sure. If not, no need to get them to me.
Thank you for hunting down the data. I am having difficulties with the location file in the ".map" format,
but I can put something together with the lat/long info on the excel sheet. Get the anomalies to me
when you can, no rush. In the meantime, I intend to advance my understanding and use of
gravity data, and will see if John can help me to process the anomalies myself. While not enrolled in
John's class, I plan to spend some time involved with it.
Thank you again for taking the time back in 2012 and allowing me the opportunity to learn from
you. Talk to you soon.
R,
Chad
Date: Tue, 6 Jan 2015 12:36:20 -0800
Subject: Re: Bridgeport gravity data.
From: [email protected]
To: [email protected]
Chad-I also have the field sheets if you want them.
Rick
Richard J. Blakely
U.S. Geological Survey
345 Middlefield Rd
Menlo Park, CA 94025
On Tue, Jan 6, 2015 at 12:24 PM, Blakely, Richard <[email protected]> wrote:
Chad-Success!! Two files are attached. The Excel file provides all of our 2012 data (three
days) concatenated into one file. I think you will recognize the latitude, longitude, and
station ID columns. The JPG is a quick-and-dirty map of station locations.
Notes:
Station 12BOD001 is the base station in Bridgeport and appears multiple times.
Ignore them.
Station 12BOD010 is repeated once. The second one should be renamed
12BOD011.
Station 12BOD052 is repeated once. As I recall, we screwed up the first reading
and made a second at the same location. Delete the first 12BOD052.
https://mail.google.com/mail/u/0/?ui=2&ik=6cde8c4c21&view=pt&search=inbox&msg=14ac5d56a3784702&siml=14ac5d56a3784702
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Gmail - FW: Bridgeport gravity data.
1/19/15, 9:32 PM
This file includes all of our work, so you now have the entire database.
These data need to be run through our gravity reduction software in order to
compute anomalies (free air, Bouguer, isostatic). I can do that later, okay?
Rick
Richard J. Blakely
U.S. Geological Survey
345 Middlefield Rd
Menlo Park, CA 94025
On Tue, Jan 6, 2015 at 9:11 AM, Chad Carlson <[email protected]> wrote:
Hi Rick,
Take time as you need. I double-checked my old emails and there was
nothing attached to any of our communications. There was nothing
entered in any of my old notebooks either (guessing everything was
entered in a notebook of yours). I will put something together for
John, roads we accessed, etc., in the interim while you search.
R,
Chad
Date: Tue, 6 Jan 2015 08:41:44 -0800
Subject: Re: Bridgeport gravity data.
From: [email protected]
To: [email protected]
Hi Chad-I'm not ignoring you, rather I'm having trouble locating the data. I'm in
some sort of Twilight Zone. Even our 2012 email communications are
gone from my mail server. Have I sent you any files since the
fieldwork? Do you have copies of field notes, digital or otherwise? Any
other clues? I'm not usually so disorganized. I've moved through two
computer transitions sine the fieldwork, so maybe that's the problem.
I'm at the doctor's office now. Will continue my search later today. More
later.
Cheers,
Rick
Richard J. Blakely
U.S. Geological Survey
Menlo Park, California
On Monday, January 5, 2015, Chad Carlson
<[email protected]> wrote:
Hi Rick,
I was under the impression that John Louie was going to
get in touch with you about sending him the Bridgeport
https://mail.google.com/mail/u/0/?ui=2&ik=6cde8c4c21&view=pt&search=inbox&msg=14ac5d56a3784702&siml=14ac5d56a3784702
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Gmail - FW: Bridgeport gravity data.
1/19/15, 9:32 PM
gravity data after our meeting, but that does not seem to
be the case. John was asking about our gravity collection
locations and if I could put together the roads/paths we
took. While I could draw from memory, if you could send
me the Bridgeport data, I could plot the collection
locations for John. Additionally, I wouldn't mind having a
file of the data saved on a drive, should something
happen to the files I will forward on to John. Let me know
how you would like to proceed.
Nice to see you at AGU.
R,
Chad
-Richard J. Blakely
U.S. Geological Survey
345 Middlefield Rd
Menlo Park, CA 94025
7 attachments
station_location_map.jpg
243K
bodie_2012_fieldnotes.pdf
838K
three_days_in_one_excel_file.xlsx
21K
BODIE060712.inp
10K
BODIE060612.inp
10K
BODIE_060512.inp
8K
Bodie.tpo
126K
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Gmail - FW: Bridgeport gravity data.
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1/19/15, 9:32 PM
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