Number of
Time Duration 50km/sec Peak Day and Time
Date UT s/c (Days) Increases Speed (UT) of Peak |
July 3 22 SB 5 637 4 5 H
8 4 SB 9.5 3 470 u
24 12 5B 2.6 5 707 25 18
Aug. 7 5B 3 519 8 20
16 2 5B 4 4 516 17 7
Sept. 1 5 5B 3 520 2 1
12 23 5B 5 5 576 14 2
19 1 5B 2.3 2 520 20 2
29 8 5B 10 6 745 Oct 4 8
Oct. 11 6 5B 7 3 446 ll 22 |
27 4 5B 4 4 520 29 1
28 5A 3 2 600 30
Nov. 6 5 5B 3 5 606 7 13
Dec. 6 17 5B 2 3 4$5 8 8
13 14 5B 1 4 637 4 4
7 Jan. 1 2 5B 5.8 4 576 3 21
17 SB 7 8 745 20 19
24 15 5B 4.8 2 525 27 7
29 10 SB 5 4 575 Feb.1
Feb. 6 10 SB 7.6 3 470 7 21
15 SA 2 2 637 16 19
Mar. 7 15 5B 10.5 5 637 13 7
24 5A 2 2 520 25
25 5B 2 4 475 26
Apr. 9 1 5B 2 2 520 10 21
May = 6 5A 1 4 625 7
7 5B 2 4 620 7

USCOM-NOAA-ASHEVILLE~7-73-1225

10



High Speed Streams in the Solar Wind

by

D. S. Intriligator
University of Southern California
Department of Physics
Los Angeles, California 90007

Description of Lists of High Speed Streams

The following is a list of the high speed solar wind proton streams observed in the interplane-
tary medium by the Ames Research Center solar wind spectrometer on the Pioneer 6, 7, 8 and 9 space-
craft. This is followed by a similar list based on the observations from the Vela 3, 4, 5A and 5B
satellites. The Pioneer list specifies all high speed streams that occurred between December 16,
1965 and June 30, 1971 for which there are data. There were many time intervals during which there
was no ground tracking of the spacecraft.

The first four columns on the left are, respectively, the year, month, day, and hour (if
known) in UT of the beginning of the high speed stream. The fifth column from the left indicates
the number of the Pioneer spacecraft. The sixth column, T(days) gives the co-rotation delay time in
days for the beginning of the high speed stream to reach the earth. This is not the co-rotation delay
that would correspond to the peak speed associated with the stream. The co-rotation delay was cal-
culated in the same manner as those published with the Pioneer observations in Solar-Geophysical Data:

co-rotation delay (secs) = Tau = ¢ - i (ro-r)

+ pe
where
W = 27-day solar rotation period angular velocity (in radians sec”?)
= 2.6934 x 107® radians sec"?
@ = Ecliptic projection of Earth-Sun-Pioneer angle (in radians)
> Ecliptic projection of Sun-Pioneer distance (in km)
rg = Sun-Earth distance (in km)
ULF Solar wind speed (in km secu?)
H

the degree of out-of-the-ecliptic of each spacecraft is insignificant and hence is ignored in the
above calculation. A positive (+) co-rotation delay indicates that the observation of the high speed
stream at the Pioneer spacecraft was before the observation of the stream at Earth; a negative (-)
co-rotation delay indicates that the high speed stream should have been previously observed at the
Earth.

The seventh column from the left indicates the approximate duration of the high speed stream in
days. The eighth column indicates the increase in the solar wind speed during the high speed stream
in increments of 50 km sec~! each. For example, if before the beginning of the stream the solar wind
speed was 300 km sec-? and if later the peak speed in the stream was 700 km sec-? then there was a
base to peak increase in solar wind speed of 400 km sec-?, i.e., there are "8" 50 km sec”? increases.
The three columns on the right are, respectively, the approximate peak speed of the stream, and the
approximate day and hour in UT of the peak.

The list of the high speed streams for the Vela data is similar to the list for the Pioneer data.
The Vela list specifies all high speed streams that were observed from July 1965 through November 1967
and then from January 1969 through May 1971. The Vela list is also subject to data gaps when the
satellites were not tracked. In addition, the Vela satellites spend a large part of each orbit in the
magnetosphere and, therefore, do not monitor the solar wind during this time.

The first four columns on the left are, respectively, the year, month, day, and approximate hour
(in UT) of the start of the high speed stream. The fifth column lists. the number of the Vela space-
craft at which the stream was observed. There is no co-rotation delay listed for the Vela observations
since these satellites are relatively close to Earth. The sixth column lists the approximate duration
of the high speed streams in days. The seventh column indicates the increase in the solar wind speed
associated with the stream in increments of 50 km sec-? (see example in Pioneer description above).
The three columns on the right list the approximate peak speed of the stream and the day and hour
in UT of the observation.

ij
|



Number of
Time Duration 50km/sec Peak Day and Time
Date UT s/c T(days) (Days) Increases Speed (UT)o£ Peak
June 2 7 7.29 7 2 616 5 19
4 18 6 11.66 3 6 748 7 17
July 1 6 11.49 1.9 2 588 3 20
Sept. 5 20 6 11.67 2 4 512 7 16
8 1 7 8.42 10 4 494 12 23
ll 18 6 10.92 3 2 476 14 19
19 19 6 10.85 10 4 553 20 20
25 7 8.48 3 1 559 25 0
Oct. 4 6 10.37 3 2 480 5
10 19 6 10.25 2 2 51L ql 20
16 20 6 10.17 7 2 468 19 18
23 19 6 10.17 10 7 641 27 20
24. 23 7 8.65 8 7 678 28 18
Nov. 6 20 6 9.67 7 3 470 9 20
6 21 7 8.65 3 468 ll 22
10 5 9 ~4.72 1.5 2 560 10 12
7 9 ~4.60 3 4 570 17 18
21 9 9 ~4.58 3 4 580 21 lL
23 21 9 4.75 1 3 610 24 9
25 18 7 8.45 4 3 575 27 20
26 21 6 8.57 3 4 590 27 21
29 20 6 8.39 4 6 747 30 21
29 13 9 4.69 1 3 520 30 3
30 19 7 8.41 4 3 615 Dec.l 19
Dec. 1 21 9 4.55 7.6 6 600 6 7
5 18 7 8.38 5 2 492 6 17
5 6 8.30 3 2 460 7
12 7 8.35 8 2 500 14
12 5 9 4.77 3.5 3 520 14 0
13 6 8.06 6 2 500 15.
26 2 9 -5.32 1.5 5 600 26 5
7 Jan. 1 7 8.34 3 2 520 2
1 6 7.61 6 3 480 3
13 7 8.28 5.5 4 542 14 19
13 21 6 7.51 5 3 488 16 21
Feb. 10 6 7.38 1 4 585 10 1
Mar. 20 1L 6 7.73 9 6 554 26 22
Apr. 2 6 7.69 9 3 540 4
25 6 7.66 6 4 604 28 2
May 4 0 6 7.8 3 3 496 5 3
23 6 7.4 6 6 647 25 23
25 7 9.6 3 D 739 25 3
6



Number
Time Duration 50km/sec Peak Day and Time
Date UT s/c T(days) (Days) Increases Speed (UT)o£ Peak
Oct. 30 12 7 2.57 5 3 496 31 12
30 15 6 -7.78 8.9 7 738 Nov.l 15
Nov. 11 7 2.63 2 4 630 11
13 7 2.69 3 4 600 14
15 12 6 -7.77 9.1 7 700 20 12
29 6 -8.06 1 4 575 29
30 ree 7 2.61 11.6 6 647 Dec.6 12
Dec. 19 14 6 “8.41 2 6 787 19 4
28 6 8.27 4 3 567 29 16
68 Jan. 1 13 6 8.3 4.2 4 586 3 13
12 13 6 78.4 71 4& 600 14 19
19 7 3.21 7.8 3 567 19 12
27 14 6 8.9 4 5 623 31 15
Feb. 9 18 6 9.5 5.9 3 536 12 17
9 21 7 3.25 11.9 7 735 12 19
21 19 7 3.36 9 4 491 24, 19
27 16 6 79.8 5 5 638 Mar.1 18
Mar. = 6 19 6 -9.92 7.8 7 660 10 19
10 7 3.81 8 5 605 15 1
17 19 7 3.88 12 4 562 26 19
19 17 6 10.41 6.1 3 553 21 18
25 20 6 -10.36 8.9 3 461 29 23
30 20 7 4,12 5 3 500 Apr.2
Apr. 3 18 6 -10.82 6 3 571 6 18
5 7 4.16 10 5 624 10 19
9 18 6 -10.93 9 4 620 17 17
26 22 7 4.50 3.8 3 538 27 22
May 4 20 7 4.56 7.8 5 586 7 17
13 15s 6 -11.45 3 4 551 14 16
uu 17 7 4,82 1 3 624 15 17
17 1 7 4.85 4.6 4 614 19 17
18 15 6 -11.58 11.1 4 553 24 16
23 0 7 4.89 7 4& 617 28 17
29 17 6 -11.6 8 4 573 Jun.l 16
June 3 0 7 5.09 2.7 3 597 4 17
7 7 5.08 11.7 6 708 10 7
10 15 6 -11.69 3.1 3 536 11 16
1s 6 711.78 5.5 4 612 15 16
24 0 7 5.25 2.7 2 510 25 18
25 7 6 -11.74 lL. 2 476 27 17
July 2 18 7 5.33 9.2 6 784 9 17
13 19 6 -11.77 7 4 599 18 14
21 16 6 -11.7%4 3.2 5 590 22 1Z
3



HIGH SPEED STREAMS IN THE SOLAR WIND
PIONEER SPACECRAFT
Number of
Time Duration  50km/sec Peak Day and Time
Date UT s/c T(days) (Days) Increases Speed (UT)of Peak
65 Dec. 25 20 6 +05 5.2 4 600 26 12
66 Jan. 4 12 6 all 1.3 2 497 0
7 12 6 13 4 3 506 8 6
20 14 6 +22 7.7 4 626 24 9
Feb. 3 8 6 +30 3.9 3 586 4 9
19 8 6 +38 2.5 6 701 20 6
22 16 6 +29 2.6 4 660 23 15
Mar. 18 6 229 13 4 629 23
Apr. 21 6 wa 6 3 520 24
May 2 6 ~.49 5 2 530 4
26 6 71.22 10 4 600 Jun 1
Jun. 28 6 2,33 2 3 575 30
Jul. 9 18 6 -2.68 2 5 675 1
Aug. 23 1 7 -.03 6.3 4 611 23 18
30 11 7 -.07 AL 5 654 31 18
Sept. 5 8 7 -.09 74 5 650 8 22
14 12 7 -.15 3.6 7 670 17 7
19 3 7 14 2.8 3 550 19 13
23 6 7 -.14 1.8 5 530 23 18
27 17 7 -.19 4.3 6 645 29 9
Oct. = 5 0 7 -.15 4a 3 607 6 6
27 15 7 -.01 2 5 632 27 19
Nov. 2 12 6 -3.99 2.5 5 650 3 15
Dec. = 5 7 31 2 4 655 5
12 7 15 4 2 500 13
27 7 +55 3 4 605, 27
67 Feb. 9 7 1.13 1 2 490 9
1s 1 7 1.01 5 2 423 7 uu
20 12 7 1.07 9 2 447 25 17
Mar. 7 7 1.62 1 4 591 7
May = 21 12 7 2.56 1.5 2 550 23
June 4 13 6 ~6.85 9 4 535 6 12
Aug. 3 12 7 2.83 8 4 527 9 12
6 12 6 -7.89 3.2 4 559 7 4
13 20 7 2.82 7.6 5 659 1s 12
25 7 2,78 2 3 525 25
30 7 2.77 2 2 530 31
Sept. 1 12 6 -7.90 4 3 508 4 13
11 12 7 2.74 5.9 3 579 12 11
Oct. 7 7 2.63 10.5 5 631 8 12
23 6 77.92 1 2 608 24 19
2



Number
Time Duration 50km/sec Peak Day and Time
Date UT s/c T(days) (Days) Increases Speed (UT)o£ Peak
Jan. 23 12 9 +56 6.5 5 720 25 16
Feb, 1 16 9 52 3.3 5 620 2
6 8 1.63 2 2 542 7
10 12 9 +30 1.2 2 510 10 12
11 8 1.63 4 4 630 12
13 12 9 645 8 1 430 13 5
1s 9 +38 2.3 1 485 15 12
18 9 +52 7 2 430 18 6
19 12 9 +37 2.2 3 525 20 12
22 9 AL 2.5 3 500 23 12
25 8 1.63 5 2 542 26
25 9 +25 1.3 2 505 25 3
Mar. 1 9 -.01 1.3 1 590 1 12
3 8 1.63 11 3 542 10
7 9 ~.02 2 3 580 8
10 12 9 -.07 3 2 490 10 12
17 9 -.15 3.7 3 520 19 3
22 1 7 6.39 3 3 612 23 1
22 16 9 -.68 1.3 2 620 23
22 23 6 11.51 l 2 555 3 »
25 8 1.65 13 5 630 28
25 8 9 -.83 2 1 630 25 10
28 9 ~.66 5 4 585 31 16
Apr. 3 9 -1.06 6 2 585, 4 8
6 6 11.43 1 4 630 6
9 6 11.41 1 4 715 9
10 8 1.65 8 6 630 13
16 6 11.60 1 2 525 17
7 9 1.40 4 4 585 18 8
19 8 1.73 2 4 585 20
21 8 1.77 4 2 585 23
21 9 -1.82 3 4 630 23 7
21 2 7 6.69 2.8 3 618 22 1
25 8 1.76 1 2 585 30
26 9 -2.06 2 4 630 27 15
28 9 2.15 5 3 585 30 16
30 20 6 11.71 1 6 625 May 1 21
May 3 7 6.89 5 4 524 7 17
5 16 6 11.71 7 6 631 6 20
14 6 11.69 1 2 500 15
14 7 7.08 2 2 595 1s 19
27 18 6 17 4 2 535 28 18
5



REPORT UAG - 27

WORLD DATA CENTER A

for
Solar-Terrestrial Physics

HIGH SPEED STREAMS IN THE SOLAR WIND

€;

JUNE 1973



HIGH SPEED STREAMS IN THE SOLAR WIND

VELA SPACECRAFT

Number of
Time Duration  50km/sec Peak Day and Time
Date ur s/c (Days) Increases Speed (UT) of Peak

65 July 27 6 3 as 5 578 29 15
Aug. 18 3 4.6 4 541 19 21
23 3 6 3 536 26 3
Sept. 5 0 3 3.2 1 611 5 9
lL 3 1.6 2 419 12 12
15 12 3 2.1 4 513 16 21
19 0 3 3.6 3 447 19 15
23 12 3 3.2 1 462 24 6

28 15 3 3.1 2 482 29

Oct. 4 21 3 3.4 4 511 7
9 3 1.9 3 457 9 12
22 9 3 2.7 3 496 24 6

27 3 3 2.6 3 543 28
Nov. 1 9 3 1.7 2 480 2 3
18 21 3 3.3 2 47. 21 0
30 12 3 1.2 2 438 30 15
Dec. 4 0 3 2.4 1 412 4 18
10 3 3 5.6 3 509 11 0
16 a 3 3.9 3 380 18 12
22 0 3 Lal 1 418 22 21
24 12 3 7.5 5 586 27 18
66 Jan. 8 0 3 3 2 496 8 0
19 15 3 7.4 5 6U6 26 12
Feb, 3 6 3 2.5 5 554 5 0)
19 0 3 3.3 7 681 20 12
23 3 3 6.1 3 625 24 0)
Mar. 2 6 3 4.2 3 424 4 6
17 3 3 4.5 6 581 19 12
23 6 3 8.5 3 616 27 3
Apr. 5 0 3 4.9 2 450 7 9
21 15 3 5.1 4 518 24 0
July 10 9 3 Ll 1 573 10 15
Aug. 12 3 3 1.2 1 502 13 3
22 3 3 5.6 4 566 23 12
31 12 3 4.7 5 653 31 12
Sept. 5 6 3 7.9 5 618 9 3
146 9 3 8.6 5 531 19 9
27 9 3 5.1 4 599 29 6
Oct. 4 6 3 4.6 5 596 6 C)
24, 12 3 5.9 5 637 27 6
30 9 3 8.1 4 619 Nov.3 18

|



Number of
Time Duration 50km/sec Peak Day and Tive
Date UT s/c T(days) (Days) Increases Speed (UT)of Peak
May = 29 1 6 7.5 9.8 5 647 Jun.2 18
duly 2 0) 7 9.8 1 4 500 3
13 6 71 9 3 560 20
16 7 10.0 4 3 570 17
Aug. 2 1 6 6.5 2.9 5 647 2 21
10 19 6 6.4 12 8 852 16 0
11 18 7 10.4 8 7 739 12 17
25 16 6 6.0 1L 6 606 28 20
Sept. 5 18 7 10.6 ql 5 654 7 17
0 6 5.5 15 6 647 9 11
28 20 6 4.6 71 7 756 29 20
Oct. = 5 23 6 4.5 11.6 3 506 10 0)
7 15 6 4.2 5.2 4 506 19 20
22 19 6 4.1 10.5. 4 566 27 12
Nov. 3 12 6 3.8 8.6 7 647 7 0
22 3 6 3.3 3.9 6 647 23 1
Dec. 4 1 6 3.3 4 6 506 6 4
4 1 6 3.2 2 3 506 15 1
22 6 3.1 1 2 506 22 0
26 8 6 3.1 4 3 506 27 7
31 8 6 3.1 5 3 506 2 20
7 Jan. 13 8 6 3.1 8 7 756 16 15
24 16 6 3.2 7.6 5 647 28 18
Feb, 11 8 6 3.3 8 3 566 13 23
20 6 6 3.4 7 7 647 24
Mar. 9 8 6 3.4 6.6 4 647 11
Apr. 5 1 6 3.6 5 5 647 8
May 15 4 6 3.5 10.3 5 566 17 4
26 2 6 3.5 9.6 6 647 Jun.1 12
June 23 12 6 2.5 7 4 556 2h 12



Number
Time Duration 50km/sec Peak Day and Time
Date UT s/c | T(days) (Days) Increases | Speed (UT) of Peak
July 27 17 6 11.76 9 3 578 29 17
Aug. 2 18 7 5.52 4 4 625 5 18
14 6 11.83 10.5 7 770 18 17
26 7 5.54 8 5 664 31 18
26 13 6 -11.78 10.2 5 694 29 17
Sept. 3 18 7 5.54 8 3 589 5 0)
8 15 6 -11.69 4.1 6 644 10 17
14 18 6 -11.78 6.8 2 513 17 18
19 18 7 5.55 23 9 770 26 18
21 15 6 -11.73 10.1 5 578 27 15
Oct. 6 8 1:46 10 8 680 ll
16 6 “12.31 5.5 5 751 16 17
16 8 1.52 6 5 542 17
7 0 7 5.48 16 5 573 25 22
24. 8 1.53 7 13 980 29
25 17 6 -12.13 1.2 3 550 26 21
Nov. 1 8 1.60 9 9 783 2
5 4 6 712.41 2.1 3 586 6 16
10 8 1.60 6 5 542 12
7 9 205 1 1 410 18 12
20 8 1.62 9 6 630 24
20 6 9 .07 1.5 4 575, 21
22 9 +08 2.5 3 590 23 12
2 12 9 ell 1.2 1 510 25
28 9 +13 2 2 490 28 12
30 8 1.64 8 4 585 Dec.5
Dec. 2 9 +16 3.7 4 570 4 12
6 12 9 +20 2 1 475 6 14
8 8 1.65 2 2 542 9
10 18 9 22h. 3.5 2 480 12 12
14 18 9 +29 1.5 2 445 15 6
4 23 6 13.66 5.8 3 511 18 20
16 8 1.65 4 5 680 21
17 18 9 +30 2.2 2 470 19 18
20 9 +32 4 3 550 21
2h 12 9 231 1.2 3 565 2h 12
31 12 9 39 1 1 475 31 15
69 Jan. 6 8 9 155 1.9 5 550 7 6
10 8 1.64 2 3 504 ey
ul 9 52 1.5 3 480 lu 15
14 9 154 8.3 5 585 19
15 8 1.65 5 2 630 7
20 8 1.64 8 5 731 24
4





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WORLD DATA CENTER A
for
Solar-Terrestrial Physics

REPORT UAG - 27

HIGH SPEED STREAMS IN THE SOLAR WIND

by
DS. Intriligator

University of Southern California
Department of Physics
Los Angeles, California

sly
2s.

Prepared by World Data Center A for
Solar-Terrestrial Physics, NOAA, Boulder, Colorado
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Telephone (202) 961-1478

Solar and Interplanetary Phenomena, Meteorology (and Nuclear Radiation):
Ionospheric Phenomena, Flare-Associated World Data Center A:
Events, Geomagnetic Variations, Magnetospheric Meteorology
and Interplanetary Magnetic Phenomena, National Climatic Center
Aurora, Cosmic Rays, Airglow: Federal Building
World Data Center A Asheville, North Carolina, U.S.A. 28801
for Solar-Terrestrial Physics Telephone (704) 254-0961
National Oceanic and Atmospheric
Administration
Boulder, Colorado, U.S.A. 80302 Oceanography:
Telephone (303) 499-1000 Ext. 6467 World Data Center A:
Oceanography
Geomagnetism, Seismology, Gravity (and National Oceanic and
Upper Mantle Project Archives): Atmospheric Administration
World Data Center A: Rockville, Maryland, U.S.A. 20852
Geomagnetism, Seismology and Gravity Telephone (202) 426-9052

Environmental Data Service, NOAA

Boulder, Colorado, U.S.A. 80302

Telephone (303) 499-1000 Ext. 6311 Rockets and Satellites:
World Data Center A:
Rockets and Satellites

Glaciology: Goddard Space Flight Center
World Data Center A: Code 601
Glaciology Greenbelt, Maryland, U.S.A. 20771
U. S. Geological Survey Telephone (301) 982-6695
1305 Tacoma Avenue South
Tacoma, Washington, U.S.A. 98402
Telephone: (206) 383-2861 Ext. 318 Tsunami:
World Data Center A:
Tsunami
Longitude and Latitude: National Oceanic and Atmospheric
World Data Center A: Administration
Longitude and Latitude P.O. Box 3887
U. S. Naval Observatory Honolulu, Hawaii, U.S.A. 96812
Washington, D. C., U.S.A. 20390 Telephone (808) 546-5698

Telephone (202) 698-8422

Notes:

(1) Worid Data Centers conduct international exchange of geophysical observations in accordance
with the principles set forth by the International Council of Scientific Unions. WDC-A is
established in the United States under the auspices of the National Academy of Sciences.

(2) Communications regarding data interchange matters in general and World Data Center A as a
whole should be addressed to: World Data Center A, Coordination Office (see address above).

(3) Inquiries and communications concerning data in specific disciplines should be addressed to
the appropriate subcenter listed above.



Number of
Time Duration 50km/sec Peak Day and Time
Date UT s/c (Days) Increases Speed (UT)of Peak
Nov. 7 12 3 8 3 462 13 6
27 15 3 2.1 3 535, 28 18
29 18 3 3.9 2 477 Dec.1 9
Dec. 4 0 3 4.9 4 571 6 12
13 3 3 4.4 2 537 14 21
25 9 3 2.2 5 656 27
67 Feb. 6 21 3 6.1 5 578 9 0)
15 21 3 2.4 7 640 16 12
22 21 3 75 3 464 27 0
Mar. 17 12 3 5.6 5 508 19 18
27 3 3 4.9 2 471 28 6
Apr. 1 3 3 12.4 5 553 5 3
19 3 3 1.4 2 481 19 18
23 0) 3 6.5 7 682 24 21
May 1 12 3 2.1 3 502 2 0
23 21 3 6.4 7 650 25 21
30 6 3 1.6 3 582 31 3
June 5 3 3 5.7 3 526 8 2
Aug. 20 3 3 1. 1 569 20 12
Sept. 22 18 3 +2 1 563 22 18
Oct. 10 15 3 1a 3 652 10 15
Nov. 12 18 3 5 2 617 13 3
69 Jan. 15 3 ae 10 770 26 0
Feb. 2 3 1 3 646 2 21
27 3 1 3 646 27 12
Mar. 23 3 5 2 541. 27 2
Apr. 12 3 8 2 432 14 3
12 4 7 3 508 17 4
22 3 7 5 541 24 12
May 8 10 3 2 3 455 10 3
13 1 3 2 3 769 14 20
Ww 4 1 4 651 15 10
18 3 6 2 480 23
June 9 3 17 3 541 19 15
Nov. 7 2 5 9.6 6 637 10 12
70 Feb. 1 18 3 5 3 541 3 0
Mar. 1 5 3 15 3 525 2 5
30 3 13 5 618 31 9
May 1 18 5B 4 547 7 18
June 23 7 SB 4 6 637 27 7