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Volume 71, 1942
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Second Catalogue of Aurora Australis Displays, 1939.

[Read before the Wellington Branch, May 28, 1941; received by the Editor, May 29, 1941; issued separately, December, 1941.]

Summary.

Particulars of 142 aurorae observed in New Zealand during 1939 are given, in continuation of the catalogue previously published.

The list of aurorae given here is a continuation of that published previously * for the period 1931 to 1938 (inclusive). Since the beginning of 1940 auroral data have been published monthly in the Astronomical Bulletins of the Carter Observatory. The present catalogue, therefore, fills in a gap in the published information.

The arrangement of the table is the same as in the previous catalogue, except that the column giving the times of minima has been omitted, as there are very few displays in which these times can be determined with any accuracy. The numbering of the displays is a continuation of that in the previous list. Times marked with an asterisk are approximate only.

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Aurorae Observed in New Zealand.
1939.
Ref. No. Date U.T. U.T. of First Obs. U.T. of Last Obs. U.T. of Maxima. Main Types. Intensity. Remarks.
1940. h. m. h. m. h. m.
349 Feb. 6 16 05 16 20 R 2 Note 1
Cloud
350 8 09 00 12 30 G 1
351 16 09 30 10 15 G 1
352 21 11 00 11 00 G 1 Cloud
353 22 Evening G 1 Cloud
354 24 09 30 16 00 16 00* RA 3 Note 2
355 25 08 50 14 00 09 33p RA, D, C, F 4 P. Note 2
11 37 RA 3
356 26 09 15 10 45 G, R 1
357 Mar. 1 09 00 10 45 09 00 HA 1
358 6 10 00 10 00 G 1
359 11 08 45 11 00 10 00 HA 1
360 13 09 30 11 45 10 28 RA 2 P
361 14 11 00 11 00 Cloud
362 19 10 55 10 55 G 1
363 21 07 45 12 45 09 54 HA, RA 2+ P. Note 3
364 22 08 15 14 30 10 20 RA 2+
365 25 09 30 09 30 G 1
366 27 09 30 11 30 2? Cloud
367 28 08 15 17 30 RA 2
368 29 11 45 11 45 R 1
369 30 Evening G 1
370 Apr. 1 08 30 14 30 G 1
371 5 08 30 08 30 R 1–2
372 8 08 15 11 00 2–3 Cloud
373 10 08 00 11 00 G 1
374 11 08 00 10 15 HA 1–2
375 12 08 00 11 00 08 30* RA 2–3
376 15 10 50 10 50 Cloud

[Footnote] * Trans. Roy. Soc. N.Z., vol. 69, part 4, March, 1940; also Carter Observatory Reprint, no. 1.

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377 17 07 15 14 20 08 05 RA, F, DS 4 Note 4
10 50 RA, F, D, PS 4 Red
13 00 D 4
378 18 07 15 13 00 G 1 Cloud
379 20 07 20 09 00 07 20 G, PS 1
380 21 06 45 12 00 07 20 R 2
381 23 07 00 18 26 07 31 HA 3 Note 5
07 40 F, RA 3 P, Red
09 30 F, RA 3
10 50 D, F 4
13 50 RB 3
15 15 F, RA, D 4
382 24 08 40 08 40
383 29 Evening G 1
384 May 1 08 30 11 00 RA 2
385 4 07 50 07 50 R 2
386 5 09 30 11 00 G 1 Cloud
387 7 06 40 07 50 07 00 R 2
388 8 07 30 14 50 09 00 RA 2–3
389 12 06 00 06 20 Cloud
390 15 07 00 11 30 G, R 1
391 16 07 10 12 00 07 45* RA 2 P
392 17 09 30 10 30 G 1
393 20 07 30 08 30 HA 2
394 21 08 30 13 10 10 00 G, R 1
395 22 07 00 12 43 07 00* HA 2 P
08 30* HA 2
09 49p RA, F, DS 3
396 25 Evening G 1
397 28 07 30 10 30 G 1
398 29 06 45 10 30 G 1
399 30 08 00 08 00 G, R 2 Cloud
400 June 2 Evening R 2? Note 6
401 3 Evening 2? Note 6
402 5 09 00 11 00 G 1
403 11 Evening G 1
404 13 13 45 13 45 G 1
405 14 07 00 13 00 09 55 R 2 Note 7
10 53 R 2 P
406 15 Evening 08 40 HA 1
407 16 07 00 16 30 07 00 RA 2
09 15 G 1
408 17 07 05 11 30 07 05 R 2
09 30* R 2
409 18 07 30 10 47 07 30* RA 2
09 58p RA, DS 2+
410 19 07 05 18 00 07 10 RA 2
411 20 07 30 09 30 G 1 Cloud
412 21 Evening 12 00 G 1 Cloud
413 25 Evening G 1
414 28 Evening G 1
415 30 Evening R Cloud
416 July 2 09 30 10 30 G 1 Cloud
417 3 09 30 11 30 RA 2 P
418 4 08 30 13 30 RA 2 Cloud
419 5 06 45 09 41 07 08p D 3+ P, Red
09 00 RA 3
420 14 07 00 11 00 07 30 G 1 Cloud
421 15 Early Evening G 1
422 16 06 30 13 30 RA 2 Cloud
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423 20 08 00 15 00 11 53 RA 3 P
13 26 RA 3
14 00 F 2
424 21 08 45 14 00 11 40 D, F 3 P. Note 8
425 Aug. 3 15 30 15 30 Cloud
426 12 06 30 12 50 07 55 RB, D 4 P, Red
08 15p RB, D, C 4 Note 9
10 45 RA, D 3+
12 30* RA 3
427 13 08 05 G 1
428 17 12 22 12 30 Cloud
429 22 07 30 18 15 14 14 DS, RA, F 4 Red, P
16 30 DS, RA, F 4 Note 10
430 23 Evening Cloud
431 24 07 30 11 00 G 1
432 Sep. 3 08 00 11 00 G 1 Cloud
433 9 08 30 12 30 10 26 RA 2 Red
434 10 08 30 11 20 G 1
435 11 Evening G 1
436 16 10 00 10 00 RA 2
437 18 08 35 11 00 Cloud
438 19 08 00 18 02 09 52 RA 2
15 00 RA 2
439 22 11 00 11 00 Cloud
440 23 11 30 13 15 Cloud
441 24 07 00 12 30 G 1
442 26 10 30 10 30 G 1
443 27 11 30 11 30 G 1
444 28 08 15 11 00 G 1
445 29 07 30 09 30 08 00 RA 2
446 Oct. 2 07 30 16 20 08 00 RA 1
447 3 07 30 16 30 13 55 DS, RA 3 P, Red
448 4 07 30 12 30 HA 1
449 5 07 30 10 00 10 00 RA 2
450 6 07 45 13 30 08 56 RA 2+ Red
451 7 07 15 10 10 08 00 RA 2
452 8 08 15 10 00 G 1
453 9 08 10 15 00 13 00* RA, DS 2 P
454 10 08 40 08 40 G 1
455 11 08 30 11 00 HA 1+ Cloud
456 12 08 45 08 45 Cloud
457 13 08 00 16 50 08 14 DS, RA, D 3 Red, P
08 36p RA, D 3–4 Note 11
11 13 PA, RA 2
16 40 RA 2
458 14 08 00 16 30 08 20 RA, D 3–4 Red, P,
09 00 HA 3 Note 11
09 42 RA, D, F 4
12 00 RA, D, F 4
16 00* RA, D 3–4
459 15 08 00 16 00 RA 1
460 17 09 30 11 45 Cloud
461 19 09 00 09 00 Cloud
462 20 08 55 11 00 G 1
463 28 08 30 08 30 Cloud
464 29 09 00 10 30 G 1
465 30 08 00 09 15 G 1
466 Nov. 1 09 00 09 00 G 1
467 2 Evening G 1
468 5 08 10 10 00 RA 2
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469 6 08 10 09 10 RA 2
470 7 08 30 10 40 G 1
471 9 10 00 10 00 G 1
472 10 09 15 12 00 G 1
473 11 09 00 10 00 G 1
474 12 09 00 11 00 11 00 RA 1+
475 13 09 00 12 00 09 40 RA 2+
476 14 09 00 10 30 G 1
477 24 11 00 11 00 G 1
478 27 10 30 12 00 Cloud
479 Dec. 1 09 30 10 30 G 1
480 3 10 30 10 30 G 1
481 4 10 30 11 00 G 1
482 8 11 30 11 30 G 1 Cloud
483 9 10 50 10 50 G 1 Cloud
484 10 09 15 11 00 G 1
485 11 10 15 11 00 G 1 Cloud
486 13 10 00 14 30 G 1 Cloud
487 15 11 00 11 00 G 1
488 20 09 15 10 15 G 1
489 27 Evening G 1
490 31 10 00 10 30 G 1

Note 1—Observed from the s.s. Maunganui, Bluff.

Note 2—Nos. 24 and 25, February 24, 25. Between these two displays a large aurora was recorded in Europe. During the same period the Awarua Radio Station experienced considerable interference on both high and low frequencies. Medium frequencies were not affected, however.

Note 3—No. 363, March 21. A remarkably steady display, practically all the changes occurring in the main arc. Rays were conspicuously absent during most stages.

Note 4—No. 377, April 17. Seen over the whole of New Zealand except Southland, where heavy rain was falling. All the maxima appear to have been of about equal intensity. Very strong radio fade-outs are reported to have occurred during the afternoon, at about 04 h. 30 m. U.T.

Note 5—No. 381, April 23. It is impossible to trace with certainty the various maximum periods. The primary maxima appear to have been at 10 h. 50 m. and 13 h. 15 m. U.T., but the aurora was remarkable for its sustained intensity during the whole night.

Note 6—No. 400, June 2, and No. 401, June 3. Only very casual observations of both these displays are available.

Note 7—No. 405, June 14. Seen also from m.v. Karitane, in Latitude 37° 07′ S. and Longitude 153° E.

Note 8—No. 424, July 21. The rare (for New Zealand displays) phenomenon of a reddish lower border to an are was seen at 11 h. 57 m. U.T.

Note 9—No. 426, August 12. One of the features of this aurora was a band which appeared near the zenith at 08 h. 30 m. U.T. This was in the form of a slowly-turning spiral. Another feature was the number of detached RB formations which were visible during and after the first two maxima.

Note 10—No. 429, August 22. The P. and T. Department experienced earth-currents on various South Island circuits on August 22 at 03 h. 38 m. U.T., 11 h. 50 m. U.T., and on August 23 at 03 h. 45 m. U.T. The red lower border to an are was visible at various times, particularly at 14 h. 09 m. U.T.

Note 11—Nos. 457, 458, October 13 and 14. The P. and T. Department reported earth-currents on various South Island circuits on October 13, 03 h. 15 m. U.T., 20 h. 20 m. U.T., and on October 14 07 h. 50 m. U.T. The October 13 display was of normal type, but on October 14 the flaming effects were very vivid, consisting of a bodily movement of the whole are upwards as on 1938, April 16.