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Mars Image 2020/04/11(UT)
Niall MacNeill,Mark Lonsdale,Christofer Mauricio Baez Jim,Damian Peach
N.MacNeill,M.Lonsdale,C.Baez,D.Peach
解説（安達）/ Comment by Makoto Adachi
Niall MacNeill氏は2か所にダストストームを記録した。メリディアニ(Meridiani;0W,-5)付近は南北25°くらいの長さに見える。
これだけ広がっているということは、4月10日にも見られたはずだが、残念なことにこの日の観測はなかった。
もう一つはオーロラ(Aurorae Sinus;53W,-10)とマルガリティファー(Margaritifer Sinus;23Ｗ;-10)との中間部にスポット上に
見つかった。この2つのダストストームの輪郭ははっきりせず、すでに拡散状態になったものと思われる。
ＳＰＣ周囲は晴れていて、暗くなり、アルギレ(Argyre;30Ｗ,-50 )もノーマルな状態になっている。Mark Lonsdale氏はこの後者の
ダストストームを記録できた。観測が2人になっていることが素晴らしい。
一方、Christofer Mauricio Baez Jimenez氏はヘラス(Hellas;275~315W,-30~60)を記録している。ヘラスは南東部に明るい部分がある。
この部分は、今シーズンは明るく記録されてきたが、今回は今まで以上に明るく、地域的なダストストームの発生した可能性がある。
この画像で、注目されるのはＳＰＣが黄色っぽく記録されていることである。ＳＰＣはダストベールで被われているらしい。
Mr. Niall MacNeill recorded dust storms in two places. The area around Meridiani (0W,-5) appears to be about 25 ° north and south.
It should have been seen on April 10 that it was so wide,but unfortunately there was no observation on that day.
The other was found on the spot midway between Aurorae Sinus (53W,-10) and Margaritifer Sinus (23W; -10). The outlines of
these two dust storms were not clear,and it seems that they have already become diffuse.
The area around the SPC is sunny and dark,and the Argyre (30W,-50) is also in a normal state. Mr. Mark Lonsdale was able to
record this latter dust storm. It is wonderful that the number of observations is two.
Meanwhile,Mr. Christopher Mauricio Baez Jimenez has recorded Hellas (275 ~ 315W,-30 ~ 60). Hellas has a bright part
in the southeast. This part has been recorded brightly this season,but this time it is brighter than ever,and there is a possibility
of a regional dust storm. What is noticeable in this image is that the SPC is recorded as yellowish. SPC seems to be covered with dust veil.
（by 3 observation; reported by Makoto Adachi)
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The Valles Marineris is just south of the equator and on the f side of the Central Meridian (CM).
It is quite obscured. The Solis Lacus to its south towards the limb can just be made out.
Above the South Polar Cap on the p side of the CM is Argyre Planitia and it shows up as a yellow patch.
To its north,there is,what looks like a small dust cloud in the Mare Erythraeum.
From there towards the equatorial regions and the terminator,there appear to be a larger expanse of dirty white clouds,
which may well be dust clouds extending to cover the Xanthe Chryse region. The Aurorae Sinus looks fairly unencumbered.
Further observations are required to confirm that these are indeed dust clouds,as the resolution is not quite good enough to be sure.
[Niall MacNeill : Wattle Flat,NSW,Australia]
[Mark Lonsdale : [Canberra,Australia]
|
Christofer Mauricio Baez Jimenez |
[Christofer Mauricio Baez Jimenez :Santo Domingo,Dominican Republic.]
Very poor seeing
[Damian Peach: Loudwater,Buckinghamshire,United Kingdom]
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