1975 Soviet nuclear tests
{{short description|none}}
{{See also|List of nuclear weapons tests of the Soviet Union}}
{{Infobox nuclear weapons test
|name = 1975
|picture = Nuclear Blast Animation Rising Mushroom Cloud.gif
|picture_description = Nuclear blast animation
|country = Soviet Union
|test_site = Atyrau, Kazakhstan; Balapan, Semipalatinsk, Kazakhstan; Degelen, Semipalatinsk, Kazakhstan; Krasnoyarsk, Russia; NZ Area A, Chyornaya Guba, Novaya Zemlya, Russia; NZ Area B, Matochkin Shar, Novaya Zemlya, Russia; Sakha, Russia
|period = 1975
|number_of_tests = 19
|test_type = underground shaft, tunnel
|max_yield = {{convert|1.3|MtTNT|lk=in}}
|previous_series = 1974 Soviet nuclear tests
|next_series = 1976 Soviet nuclear tests
}}
{{GeoGroup|article=1975 Soviet nuclear tests}}
The Soviet Union's 1975 nuclear test series was a group of 19 nuclear tests conducted in 1975. These tests A bomb test may be a salvo test, defined as two or more explosions "where a period of time between successive individual explosions does not exceed 5 seconds and where the burial points of all explosive devices can be connected by segments of straight lines, each of them connecting two burial points and does not exceed 40 kilometers in length". {{cite web|first=V. N.|last=Mikhailov|title=Catalog of World Wide Nuclear Testing|publisher=Begell-Atom, LLC|url=http://www.iss-atom.ru/ksenia/catal_nt/1.htm|access-date=2013-12-17|archive-url=https://web.archive.org/web/20140426102201/http://www.iss-atom.ru/ksenia/catal_nt/1.htm|archive-date=2014-04-26|url-status=dead}} followed the 1974 Soviet nuclear tests series and preceded the 1976 Soviet nuclear tests series.
| tunnel,
weapon effect
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 417 - 2{{anchor|417}}
| {{dts|format=dmy|1975|2|20}} 05:33:00.0
| style="text-align:center;" | ALMT (6 hrs)
|| Degelen, Semipalatinsk, Kazakhstan: 163 {{coord|49.77837|78.00296|name=417 - 2|display=inline}}
| {{sort|000749|}}{{convert|749|m|abbr=on}} +
| tunnel,
weapon effect
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 417 - 3{{anchor|417}}
| {{dts|format=dmy|1975|2|20}} 05:33:00.0
| style="text-align:center;" | ALMT (6 hrs)
|| Degelen, Semipalatinsk, Kazakhstan: 163 {{coord|49.77837|78.00296|name=417 - 3|display=inline}}
| {{sort|000749|}}{{convert|749|m|abbr=on}} +
| tunnel,
weapon effect
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 418{{anchor|418}}
| {{dts|format=dmy|1975|2|20}} 05:33:??
| style="text-align:center;" | ALMT (6 hrs)
|| Degelen, Semipalatinsk, Kazakhstan: 156 {{coord|49.79516|78.0084|name=418|display=inline}}
| {{sort|000665|}}{{convert|665|m|abbr=on}} +
| tunnel,
weapon effect
|
| style="text-align:center;" | {{sort|000550000|55 kt}}
|
|
|-
! 419{{anchor|419}}
| {{dts|format=dmy|1975|3|11}} 05:43:00.1
| style="text-align:center;" | ALMT (6 hrs)
|| Degelen, Semipalatinsk, Kazakhstan: 101 {{coord|49.7462|78.106|name=419|display=inline}}
| {{sort|000650|}}{{convert|650|m|abbr=on}} +
| tunnel,
weapons development
|
| style="text-align:center;" | {{sort|000240000|24 kt}}
|
|
|-
! 420 Galit A2.1 (Halite){{anchor|420 Galit A2.1 (Halite)}}
| {{dts|format=dmy|1975|4|25}} 05:00:00.0
| style="text-align:center;" | SHET (5 hrs)
|| Atyrau, Kazakhstan: A-II-2 {{coord|47.909|47.912|name=420 Galit A2.1 (Halite)|display=inline}}
| {{sort|000000|}} – {{convert|600|m|abbr=on}}
| underground shaft,
industrial
|
| style="text-align:center;" | {{sort|000003500|350 t}}
|
| A-II, in cavity produced by #280.
|-
! 421{{anchor|421}}
| {{dts|format=dmy|1975|4|27}} 05:36:59.78
| style="text-align:center;" | ALMT (6 hrs)
|| Balapan, Semipalatinsk, Kazakhstan: 1205 {{coord|49.94006|78.90611|name=421|display=inline}}
| {{sort|000330|}}{{convert|330|m|abbr=on}} +
| underground shaft,
weapons development
|
| style="text-align:center;" | {{sort|000290000|29 kt}}
|
|
|-
! 422{{anchor|422}}
| {{dts|format=dmy|1975|6|8}} 03:27:00.0
| style="text-align:center;" | ALMT (6 hrs)
|| Degelen, Semipalatinsk, Kazakhstan: 165 {{coord|49.7606|78.0125|name=422|display=inline}}
| {{sort|000722|}}{{convert|722|m|abbr=on}} +
| tunnel,
peaceful research
|
| style="text-align:center;" | {{sort|000320000|32 kt}}
|
|
|-
! 423{{anchor|423}}
| {{dts|format=dmy|1975|6|30}} 03:27:00.25
| style="text-align:center;" | ALMT (6 hrs)
|| Balapan, Semipalatinsk, Kazakhstan: A {{coord|49.9862|78.89576|name=423|display=inline}}
| {{sort|000330|}}{{convert|330|m|abbr=on}} +
| underground shaft,
weapons development
|
| style="text-align:center;" | {{sort|000080000|8 kt}}
|
|
|-
! 424 - 1{{anchor|424}}
| {{dts|format=dmy|1975|7|15}} 02:57:00.0
| style="text-align:center;" | ALMT (6 hrs)
|| Degelen, Semipalatinsk, Kazakhstan: 133 {{coord|49.79556|78.09568|name=424 - 1|display=inline}}
| {{sort|000686|}}{{convert|686|m|abbr=on}} +
| tunnel,
weapons development
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 424 - 2{{anchor|424}}
| {{dts|format=dmy|1975|7|15}} 02:57:00.0
| style="text-align:center;" | ALMT (6 hrs)
|| Degelen, Semipalatinsk, Kazakhstan: 133 {{coord|49.79556|78.09568|name=424 - 2|display=inline}}
| {{sort|000686|}}{{convert|686|m|abbr=on}} +
| tunnel,
weapons development
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 425 - 1{{anchor|425}}
| {{dts|format=dmy|1975|8|7}} 03:57:00.1
| style="text-align:center;" | ALMT (6 hrs)
|| Degelen, Semipalatinsk, Kazakhstan: 122 {{coord|49.8038|78.1234|name=425 - 1|display=inline}}
| {{sort|000711|}}{{convert|711|m|abbr=on}} +
| tunnel,
weapons development
|
| style="text-align:center;" | {{sort|000140000|14 kt}}
|
|
|-
! 425 - 2{{anchor|425}}
| {{dts|format=dmy|1975|8|7}} 03:57:00
| style="text-align:center;" | ALMT (6 hrs)
|| Degelen, Semipalatinsk, Kazakhstan: 123 {{coord|49.80319|78.12254|name=425 - 2|display=inline}}
| {{sort|000752|}}{{convert|752|m|abbr=on}} +
| tunnel,
weapons development
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 426 Gorizont 4 (Horizon){{anchor|426 Gorizont 4 (Horizon)}}
| {{dts|format=dmy|1975|8|12}} 15:00:00.6
| style="text-align:center;" | YAKT (9 hrs)
|| Sakha, Russia: G-4 {{coord|70.76367|126.95232|name=426 Gorizont 4 (Horizon)|display=inline}}
| {{sort|000000|}} – {{convert|500|m|abbr=on}}
| underground shaft,
seismic sounding
|
| style="text-align:center;" | {{sort|000076000|7.6 kt}}
|
| Seismic probing program. 120 km SW Tiksi.
|-
! 427 - 1{{anchor|427}}
| {{dts|format=dmy|1975|8|23}} 08:59:58.25
| style="text-align:center;" | MSK (3 hrs)
|| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-10 {{coord|73.334|54.682|name=427 - 1|display=inline}}
| {{sort|000000|}}{{convert|100|m|abbr=on}} – {{convert|700|m|abbr=on}}
| tunnel,
weapon effect
|
| style="text-align:center;" | {{sort|011000000|1.1 Mt}}
| Venting detected on site
|
|-
! 427 - 2{{anchor|427}}
| {{dts|format=dmy|1975|8|23}} 08:59:58.3
| style="text-align:center;" | MSK (3 hrs)
|| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-10 {{coord|73.334|54.682|name=427 - 2|display=inline}}
| {{sort|000100|}}{{convert|100|m|abbr=on}} +
| tunnel,
weapon effect
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 427 - 3{{anchor|427}}
| {{dts|format=dmy|1975|8|23}} 08:59:58.3
| style="text-align:center;" | MSK (3 hrs)
|| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-10 {{coord|73.334|54.682|name=427 - 3|display=inline}}
| {{sort|000100|}}{{convert|100|m|abbr=on}} +
| tunnel,
weapon effect
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 427 - 4{{anchor|427}}
| {{dts|format=dmy|1975|8|23}} 08:59:58.3
| style="text-align:center;" | MSK (3 hrs)
|| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-10 {{coord|73.334|54.682|name=427 - 4|display=inline}}
| {{sort|000100|}}{{convert|100|m|abbr=on}} +
| tunnel,
weapon effect
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 427 - 5{{anchor|427}}
| {{dts|format=dmy|1975|8|23}} 08:59:58.3
| style="text-align:center;" | MSK (3 hrs)
|| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-10 {{coord|73.334|54.682|name=427 - 5|display=inline}}
| {{sort|000100|}}{{convert|100|m|abbr=on}} +
| tunnel,
weapons development
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 427 - 6{{anchor|427}}
| {{dts|format=dmy|1975|8|23}} 08:59:58.3
| style="text-align:center;" | MSK (3 hrs)
|| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-10 {{coord|73.334|54.682|name=427 - 6|display=inline}}
| {{sort|000100|}}{{convert|100|m|abbr=on}} +
| tunnel,
weapons development
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 427 - 7{{anchor|427}}
| {{dts|format=dmy|1975|8|23}} 08:59:58.3
| style="text-align:center;" | MSK (3 hrs)
|| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-10 {{coord|73.334|54.682|name=427 - 7|display=inline}}
| {{sort|000100|}}{{convert|100|m|abbr=on}} +
| tunnel,
weapons development
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 427 - 8{{anchor|427}}
| {{dts|format=dmy|1975|8|23}} 08:59:58.3
| style="text-align:center;" | MSK (3 hrs)
|| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-10 {{coord|73.334|54.682|name=427 - 8|display=inline}}
| {{sort|000100|}}{{convert|100|m|abbr=on}} +
| tunnel,
weapons development
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 428 Gorizont 3 (Horizon){{anchor|428 Gorizont 3 (Horizon)}}
| {{dts|format=dmy|1975|9|29}} 11:00:00.4
| style="text-align:center;" | KRAT (7 hrs)
|| Krasnoyarsk, Russia: G-3 {{coord|69.578|90.337|name=428 Gorizont 3 (Horizon)|display=inline}}
| {{sort|000000|}} – {{convert|830|m|abbr=on}}
| underground shaft,
seismic sounding
|
| style="text-align:center;" | {{sort|000076000|7.6 kt}}
|
| Seismic probing program. 80 km E Norilsk.
|-
! 429{{anchor|429}}
| {{dts|format=dmy|1975|10|5}} 04:27:00.0
| style="text-align:center;" | ALMT (6 hrs)
|| Degelen, Semipalatinsk, Kazakhstan: 192 {{coord|49.78143|78.09052|name=429|display=inline}}
| {{sort|000635|}}{{convert|635|m|abbr=on}} +
| tunnel,
weapons development
|
| style="text-align:center;" | {{sort|000002000|200 t}}
|
|
|-
! 431{{anchor|431}}
| {{dts|format=dmy|1975|10|18}} 08:59:59.4
| style="text-align:center;" | MSK (3 hrs)
|| NZ Area A, Chyornaya Guba, Novaya Zemlya, Russia: Yu-7 {{coord|70.795|53.712|name=431|display=inline}}
| {{sort|000030|}}{{convert|30|m|abbr=on}} +
| underground shaft,
weapons development
|
| style="text-align:center;" | {{sort|006000000|600 kt}}
|
|
|-
! 430 - 1{{anchor|430}}
| {{dts|format=dmy|1975|10|18}} 09:00:??
| style="text-align:center;" | MSK (3 hrs)
|| NZ Area A, Chyornaya Guba, Novaya Zemlya, Russia: Yu-6N {{coord|70.99|53.7|name=430 - 1|display=inline}}
| {{sort|000000|}}{{convert|30|m|abbr=on}} – {{convert|1100|m|abbr=on}}
| underground shaft,
weapons development
|
| style="text-align:center;" | {{sort|006000000|600 kt}}
| Venting detected
|
|-
! 430 - 2{{anchor|430}}
| {{dts|format=dmy|1975|10|18}} 09:00:??
| style="text-align:center;" | MSK (3 hrs)
|| NZ Area A, Chyornaya Guba, Novaya Zemlya, Russia: Yu-6N {{coord|70.99|53.7|name=430 - 2|display=inline}}
| {{sort|000030|}}{{convert|30|m|abbr=on}} +
| underground shaft,
weapons development
|
| style="text-align:center;" | {{sort|006000000|600 kt}}
|
|
|-
! 432 - 1{{anchor|432}}
| {{dts|format=dmy|1975|10|21}} 11:59:58.03
| style="text-align:center;" | MSK (3 hrs)
|| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-12 {{coord|73.31907|54.9269|name=432 - 1|display=inline}}
| {{sort|000000|}}{{convert|100|m|abbr=on}} – {{convert|700|m|abbr=on}}
| tunnel,
weapons development
|
| style="text-align:center;" | {{sort|013000000|1.3 Mt}}
| Venting detected off site, {{convert|300|kCi|TBq|abbr=on}}
|
|-
! 432 - 2{{anchor|432}}
| {{dts|format=dmy|1975|10|21}} 11:59:58.0
| style="text-align:center;" | MSK (3 hrs)
|| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-12 {{coord|73.3158|54.93087|name=432 - 2|display=inline}}
| {{sort|000100|}}{{convert|100|m|abbr=on}} +
| tunnel,
weapons development
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 432 - 3{{anchor|432}}
| {{dts|format=dmy|1975|10|21}} 11:59:58.0
| style="text-align:center;" | MSK (3 hrs)
|| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-12 {{coord|73.31435|54.93673|name=432 - 3|display=inline}}
| {{sort|000100|}}{{convert|100|m|abbr=on}} +
| tunnel,
weapons development
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 432 - 4{{anchor|432}}
| {{dts|format=dmy|1975|10|21}} 11:59:58.0
| style="text-align:center;" | MSK (3 hrs)
|| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-12 {{coord|73.31435|54.93673|name=432 - 4|display=inline}}
| {{sort|000100|}}{{convert|100|m|abbr=on}} +
| tunnel,
weapons development
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 432 - 5{{anchor|432}}
| {{dts|format=dmy|1975|10|21}} 11:59:58.0
| style="text-align:center;" | MSK (3 hrs)
|| NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-12 {{coord|73.31435|54.93673|name=432 - 5|display=inline}}
| {{sort|000100|}}{{convert|100|m|abbr=on}} +
| tunnel,
weapons development
|
| style="text-align:center;" | {{sort|000000000|unknown yield}}
|
|
|-
! 433{{anchor|433}}
| {{dts|format=dmy|1975|10|29}} 04:46:59.89
| style="text-align:center;" | ALMT (6 hrs)
|| Balapan, Semipalatinsk, Kazakhstan: 1206 {{coord|49.95389|78.87389|name=433|display=inline}}
| {{sort|000330|}}{{convert|330|m|abbr=on}} +
| underground shaft,
weapons development
|
| style="text-align:center;" | {{sort|000360000|36 kt}}
|
|
|-
! 434{{anchor|434}}
| {{dts|format=dmy|1975|12|13}} 04:56:59.99
| style="text-align:center;" | ALMT (6 hrs)
|| Degelen, Semipalatinsk, Kazakhstan: 604 {{coord|49.8076|78.1144|name=434|display=inline}}
| {{sort|000770|}}{{convert|770|m|abbr=on}} +
| tunnel,
weapons development
|
| style="text-align:center;" | {{sort|000080000|8 kt}}
|
|
|-
! 435{{anchor|435}}
| {{dts|format=dmy|1975|12|25}} 05:16:59.67
| style="text-align:center;" | ALMT (6 hrs)
|| Balapan, Semipalatinsk, Kazakhstan: 1067 {{coord|50.04884|78.81882|name=435|display=inline}}
| {{sort|000330|}}{{convert|330|m|abbr=on}} +
| underground shaft,
weapons development
|
| style="text-align:center;" | {{sort|000590000|59 kt}}
|
|
|}
{{reflist|group=note}}