| Entry | Date | Title | Site | Author | #Graphics |
|---|---|---|---|---|---|
| 103 | Thu 28-Sep-2000 | Site location | horst | ||
| 95 | Tue 26-Sep-2000 | Various array and site dimensions | horst | ||
| 73 | Sun 17-Sep-2000 | photos taken of ground cover | martin | ||
| 18 | Sun 27-Aug-2000 | Ground cover at field site | horst |
The measurement array is located 1 mile north of Racine Street and 3.5 miles east of Highway 41. Racine Street and Highway 41 cross in Kettleman City, California. For the purpose of using the sun angle program, I read latitude and longitude from the Kettleman City quadrangle to be latitude 36 deg 1'15" north and longitude 119 deg 53'45" west.
This morning, September 26, John and I measured various dimensions of the array layout. Starting from the NE end of the array, and measuring along the NE/SW line of the array: Northern check dam to tower 9 (array 2/3) = 44.60 m Tower 1 (array 2/3) to tower 0 = 10.40 m Tower 1 to NE leg of array 4 = 19.95 m SW leg of array 4 to intermediate check dam = 27.55 m Intermediate check dam to TRH profile tower = 34.75 m TRH profile tower to wind profile tower = 9.95 m Wind profile tower to tower a = 10.35 m Tower a to southern check dam = 30 m The road to the east is 85-90 cm above the level of the field. The check dams are 20-25 cm above the level of the field. The ditchs on either side of a check dam are 45-50 cm deep relative to the top of the check dam. On September 28, John estimated the NS ditch east of the array to be 6' deep and 25' wide. He also estimated the width of the EW canal along Quebec to be 90' directly north of the site or 2.5 mile east of the base trailer. At that location the height of the banks is about 2'-4'. The height of the north bank above the water 0.5 mile east of the base is 6'-8'.
photos taken of the ground cover in the fields
upwind of the array. All photos were taken from the
NE corner of each field, looking to the SW. The file
names contain the field number. A yard stick provided
scale for close up photos.
Westlake Farms field numbering scheme:
/ /
/ /
/ / ^
/ / US 41 / \
/ / |
/ / |
/ / N
/ /
/ / pump ditch
/ /--------------------------------------------------
/ /| base | | |
/ | | | | |
| | | | |
| | | | |
| 22055 | 22057 | 22040 | 22030 |
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| | | | |
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| | | | |
| 22085 | 22087 | 22090 | 22100 |
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| | | | |
| | | | array |
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| | | | |
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| | | | |
| | 22177 | 22160 | 22150 |
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On September 24, Tom Horst repeated the photos from the NW corner of
the fields.
On August 24, I surveyed the ground cover surrounding the SGS field site. I am using as a basis, the Westlake Farms 5 digit field numbers. Each square mile is referenced as the transect (22), followed by the section (1-36). The last digit refers to a subdivision of the square mile into separately managed fields. The section numbers are allocated to a 6-mile by 6-mile square transect/range plot and are arranged as follows: 6 5 4 3 2 1 7 8 9 10 11 12 18 17 16 15 14 13 19 20 21 22 23 24 30 29 28 27 26 25 31 32 33 34 35 36 Our current plan is to locate the array in the SE corner of section 10, Range 19E, Transect 22S. This is field 22100. The ground cover is stubble and there are periodic E/W irrigation check dams. The dam spacing appears to be generally 64 paces (~yards) or about 60m. A 45-degree diagonal spans about 80 m between checks. Near the south end of the field there is one spacing of 82 paces or about 75m. Here a 45-degree diagonal spans about 100m. The field directly to the north (22030) is fallow, that is bare dirt, plowed or low surface weeds. The field to the NW (22040) is fallow, but with scattered weeds perhaps 12-18 inches tall which look to me like russian thistle(?). There is a group of 4-6 oil storage tanks on the west edge of this field about 0.6 miles S of the north edge. The field to the west (22090) is a mix of stubble and russian thistle. The north "half" is fallow, the south "half" has more stubble and weeds. The weeds are particularly dense near the southwest corner. To the north of fields 22030 and 22040 is a road named Quebec. On the north side of this road is a very large irrigation canal. The fields immediately to the north of the canal are mostly fallow. The base trailer will be located in the NW corned of field 22057, which runs 0.5 mile E/W and 1 mile N/S. To the west of field 22057 is field 22055, which also runs 0.5 mile E/W and 1 mile N/S. Both of these fields are fallow. The fields further to the south of the base and directly west of the field site are 22087 and 22085. Each is 0.5 mile E/W and 1 mile N/S. 22087 is flattened and standing stubble. The north "half" is fallow. To the west of these fields is cotton (22063, 22077, 22187, 22174. Going south from Quebec, the fields to the east of the field site are 22025 and 22110 (immediately east of the field site). 22025 is planted in cotton and 22110 has been recently plowed. To the south of the field site, 22150 is fallow. Field 22160 to the SW is a wetlands with tall shrubs and small trees. It is surrounded by a dike which is about 5.5 ft tall. On the east edge of 22160, this dike ends about 0.7 mile north of the south edge.