Transponders locations for Flow Mow
Endeavour Segment Long Baseline (LBL) Network
Click HERE for a map of the transponder, current meter,
and wasp positions relative to the hydrothermal fields on the Endeavour Segment.
Frequency summary/conflicts:
7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0
REC: HIJK ABEs ABEr
LMNO UW CTD
SEND: I&N M ABEr O L K H ABEs
UW CTD
ABEr = ABE relay
ABEs = ABE slant range
Conficts?
1) What are the release frequencies for the wasp and thomson's current meter mooring?
2) Bring uw ctd xpr as backup (do NOT use when ABE is in water!!)
3) IF we decide to use a CTD transponder while ABE is in the water,
at what frequency should Tom set his spare transponder (the one with wire clamps)?
Fritz reports (7/19/00 FlowMow mtg):
J was pulled by Perturbed cruise
ABE slant range RECeive frequency changed to 11.0
Previous locations of expendable transponders as given by Debbie Kelley (3/00):
ID Latitude (N) Longitude (W) REC/XMIT Depth
H 47 54.8864 129 06.2068 9.0/11.50 1977.01
I 47 57.7530 129 04.9634 9.0/07.50 2000.40
J 47 57.2209 129 05.9132 9.0/11.00 1997.20
K 47 56.0183 129 05.7321 9.0/10.50 1920.62
ABE and CTD Navigational Characteristics
ID REC XMIT
CTD 14.0 9.0
ABE Relay 14.0 9.0
ABE Slant Range 11.0 13.0
From Tom Crook (on Atlantis at MEF w/ Perturbed cruise) via Dana Yoerger: 13 JUNE 2000
Comments from Tom's email in {}'s...
ATLANTIS AT 03-53 "ENDEAVOUR" JUNE 2000 ALBL Coordinate System Origin
1 47 53.634 -129 -09.870 0.000 0000.0 0000.0 0.0000
EXPENDABLE TRANSPONDERS AT ENDEAVOUR
XPN REC/XMIT X Y Z LAT (N) LON (W)
H 9.0/11.5 4566.50 2320.10 1977.0 47 54.88599 129 06.20608
I 9.0/ 7.5 6115.31 7633.09 2000.4 47 57.75302 129 04.96340
J 9.0/11.0 4931.59 6645.30 1997.2 47 57.21998 129 05.91315
K 9.0/10.5 5157.21 4417.91 1920.6 47 56.01802 129 05.73213
I & J SET IN 1995.
H & K SET IN 1997.
ALL are ALIVE
{Tom will recommend that I and K (not J) be pulled when Perturbed ends
IF any are pulled at all...}
DEAD TRANSPONDERS AT ENDEAVOUR
Z 9.0/ 9.5 3228.03 2531.38 2075.0 47 55.00000 129 07.28000
Z 9.0/10.5 3726.57 4477.17 2095.0 47 56.05000 129 06.88000
SONAR MOORING
WASP 5394.17 7203.13 alt 16m 47 57.52100 129 05.54200
Updated position - was redeployed in 2000. 16M high
SURVEYED LOCATIONS FOR EXPENDABLES SET JUNE 2000
XPN REC/XMIT X Y Z LAT (N) LON (W)
L 9.0/10.0 6064.10 6912.80 1881.1 47 57.36433 129 05.00449
M 9.0/ 8.5 3564.00 4798.70 1865.4 47 56.22351 129 07.01043
N 9.0/ 7.5 4563.50 7450.70 1866.2 47 57.65460 129 06.20849
O 9.0/ 9.5 5267.10 4369.90 1894.5 47 55.99211 129 05.64396
{The transponders with the better frequencies (9.5 and 10.0) were set
on the eastern wall.}
ALL TETHERS 200 METERS OF 1/4 DURAPLEX LINE
{I think the depth differences of the surveyed transponders is
due to stretch of the tether line. ~20% Still trying to find out
if duraplex is a type of nylon line.}
FRITZ STAHR BOX & CURRENT METER - PROPOSED LOCATIONS
Current Meter (orig prop - N of ABE ops) 5168.16 6574.10 47 57.18156 129 05.72334
Current Meter (new proposal - S of ABE ops and Quebec site 47 56.5703 129 06.0465
Box corner A 4909.24 6454.61 47 57.11708 129 05.93109
Box corner B 5288.26 6317.59 47 57.04314 129 05.62698
Box corner C 5082.09 5753.42 47 56.73870 129 05.79240
Box corner D 4704.45 5890.30 47 56.81256 129 06.09540
UTM ZONE 9
X Y
H 492271.54 5306832.12
I 493824.75 5312141.18
J 492641.85 5311155.15
K 492864.35 5308928.34
L 493772.85 5311421.22
M 491273.62 5309311.18
N 492275.42 5311960.72
O 492974.05 5308880.22
Z 490934.51 5307045.26
Z 491435.51 5308989.53
WASP 493104.36 5311712.19
CM 492877.95 5311083.68 (N of MEF site)
BOX A 492619.28 5310964.56
BOX B 492997.55 5310827.13
BOX C 492790.99 5310263.43
BOX D 492414.07 5310400.74