Re: Could provide me the coordinates at Columbia River mouth

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Re: Could provide me the coordinates at Columbia River mouth

Postby yinglong on Mon Jul 25, 2011 11:18 am

(Note that this message was originally sent via email on June 30, 2011)

> From: Yinglong Zhang <yinglong@stccmop.org>
> Date: June 30, 2011 5:26:52 PM PDT
> To: Yoshiki Yamazaki <yoshikiy@hawaii.edu>
> Cc: Harry Yeh <harry@engr.orst.edu>
> Subject: Re: Could provide me the coordinates at Columbia River mouth and the Bonneville Dam in meter?
>
> Hi Yoshiki:
>
> Sorry for the late reply.
>
> The DEM files are in raster .asc format - same as NGDC DEM data. The format
> can also be seen in the following program I wrote:
>
> http://www.stccmop.org/~yinglong/FTP_DI ... tured2.f90
>
> So the headers of .asc have the corner info; as you noticed they are in meters
> (OR State Plane Coord. North NAD27). You can use these to interpolate depths onto
> your grid.
>
> We sometimes gave the station locations in lat/lon and you can project them onto ORSP
> using any standard proj tool. I've done that and they do match the DEM.
>
> Regards.
>
> Y. Joseph Zhang, Ph.D.
> Center for Coastal Margin Observation & Prediction (CMOP)
> A National Science Foundation Science & Technology Center
> Oregon Health & Science University
> 20000 NW Walker Road, Beaverton, OR 97006
>
> yinglong@stccmop.org
>
> ----- Original Message -----
> From: "Yoshiki Yamazaki" <yoshikiy@hawaii.edu>
> To: "Harry Yeh" <harry@engr.orst.edu>
> Cc: "Joseph Zhang" <yinglong@stccmop.org>
> Sent: Wednesday, June 29, 2011 4:44:31 AM
> Subject: Could provide me the coordinates at Columbia River mouth and the Bonneville Dam in meter?
>
>
>
>
> Dear Dr. Yeh,
>
>
>
> Thank you very much for answering my questions. I tried to find the coordinates at the Columbia River mouth, the Bonneville Dam, and while-line boundary, and plot on the bathymetry data, but it seems they are shifted. All three points are not shown in water. These shifts may be due to my interpolation of grid size in degree.
>
>
>
> Since you also provided me the four corner coordinates in “meter” as
>
> Upper Left ( 329588.230, 308236.586)
> Lower Left ( 329588.230, 189336.690)
> Upper Right ( 498716.531, 308236.586)
> Lower Right ( 498716.531, 189336.690)
> Center ( 414152.380, 248786.638)
>
>
>
> And the while-line boundary is also provided in meter in the website.
>
>
>
> It will be very thankful if you could provide me the coordinates at the Columbia River mouth and the Bonneville Dam in “meter” as well. This will be easy for me to define the coordinates correctly.
>
>
>
> Thank you very much for your kind helps,
>
>
>
> Yoshiki
>
> ----- Original Message -----
> From: Harry Yeh <harry@engr.orst.edu>
> Date: Tuesday, June 28, 2011 1:24 pm
> Subject: Re: Question about the locations where we should apply boundary conditions.
> To: Yoshiki Yamazaki <yoshikiy@hawaii.edu>
> Cc: Joseph Zhang <yinglong@stccmop.org>
>
>
>
>
>
>
>> The answer to #1:
>> n Meters
>> Upper Left ( 329588.230, 308236.586)
>> Lower Left ( 329588.230, 189336.690)
>> Upper Right ( 498716.531, 308236.586)
>> Lower Right ( 498716.531, 189336.690)
>> Center ( 414152.380, 248786.638)
>>
>> in Feet: In Deg:
>> Upper Left: 1087641.159 1017180.733 124d7'0.28"W 46d24'1.771"N
>> Lower Left: 1087641.159 624811.077 124d2'54.501"W 45d19'31.934"N
>> Upper Right: 1645764.552 1017180.733 121d54'18.167"W 46d26'52.963"N
>> Lower Right: 1645764.552 624811.077 121d52'42.58"W 45d22'19.965"N
>> Center: 1366702.854 820995.905 122d59'14.716"W 45d53'30.543"N
>
>>
>
>> With this info, you might be able to figure out your questions #2.
>>
>
>> Coordinates of the Bonneville Dam: 45°38′39″N 121°56′26″W / 45.64417°N 121.94056°W
>> Coordinates of the Columbia River mouth: 124°04'7.74"W 46°14'44.1"N
>>
>
>> Dr. Joseph Zhang might provide the answers to other questions.
>> I thank you in advance for your time and contribution.
>>
>
>> Harry
>>
>
>>
>>
>
>
>> On Jun 25, 2011, at 4:30 PM, Yoshiki Yamazaki wrote: >
>
>
>
>
>
>
>> Dear Dr. Yeh,
>
>
>>
>> I have a few questions regarding bathymetry data and initial conditions. It will be very thankful if you could provide the following information.
>>
>> 1.
>> Could you provide longitude(deg) and latitude(deg) at 4 corners of the bathymetry data? Either OR State Plane Coordinate North or WGS84 is fine.
>>
>> 2. it seems the grid spacing of bathymetry data is in meter instead of degree. Could you provide the exact grid point (i,j) of the following points based on your 2m or 4m grid data instead of (longitude, latitude) or meters?
>>
>> (1). (i,j) at t he upstream boundary condition at Bonneville dam.
>>
>> (2). (i,j) at t he downstream boundary conditions at the river mouth
>>
>> (3). Is t his downstream boundary conditions at the river mouth is the same as where we should input tide ( 124°04'7.74"W 46°14'44.1"N)?
>>
>> (4). (i,j) at the while-line boundary corresponding to (402754.906250 282966.093750) or 123°10'45.6"W 46°10'55.6"N)
>>
>> (5). Is the while-line boundary corresponding at 123°10'45.6"W 46°10'55.6"N is where we input the water-surface and velocity time histories (at the middle point of the river mouth)?
>>
>> Thank you very much for your kind helps.
>>
>> Yoshiki Yamazaki
>> Post-doctoral Research Fellow
>> Department of Ocean & Resources Engineering
>> University of Hawaii at Manoa
>> 2540 Dole St., Holmes Hall 408
>> Honolulu, HI 96822
>> Tel: (808) 956-8198
>> E-mail: yoshikiy@hawaii.edu >
>
>
>
>
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> Harry Yeh
>> Edwards Professor
>> School of Civil & Construction Engineering
>> Oregon State University
>> Corvallis, OR 97331-3212
>> USA
>> Voice: 541-737-8057
>> Fax: 541-737-3052
>> http://cce.oregonstate.edu/people/faculty/yeh.html >
>>
>>
>>
yinglong
 
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