The Soviet Union's 1971 nuclear test series was a group of 23 nuclear tests conducted in 1971. These testsA 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". followed the 1970 Soviet nuclear tests series and preceded the 1972 Soviet nuclear tests series.

+ Soviet Union's 1971 series tests and detonations Name The US, France and Great Britain have code-named their test events, while the USSR and China did not, and therefore have only test numbers (with some exceptions – Soviet peaceful explosions were named). Word translations into English in parentheses unless the name is a proper noun. A dash followed by a number indicates a member of a salvo event. The US also sometimes named the individual explosions in such a salvo test, which results in "name1 – 1(with name2)". If test is canceled or aborted, then the row data like date and location discloses the intended plans, where known. Date time (UT) Local time zoneTo convert the UT time into standard local, add the number of hours in parentheses to the UT time; for local daylight saving time, add one additional hour. If the result is earlier than 00:00, add 24 hours and subtract 1 from the day; if it is 24:00 or later, subtract 24 hours and add 1 to the day. Historical time zone data obtained from the IANA time zone database. LocationRough place name and a latitude/longitude reference; for rocket-carried tests, the launch location is specified before the detonation location, if known. Some locations are extremely accurate; others (like airdrops and space blasts) may be quite inaccurate. "~" indicates a likely pro-forma rough location, shared with other tests in that same area. Elevation + height Elevation is the ground level at the point directly below the explosion relative to sea level; height is the additional distance added or subtracted by tower, balloon, shaft, tunnel, air drop or other contrivance. For rocket bursts the ground level is "N/A". In some cases it is not clear if the height is absolute or relative to ground, for example, Plumbbob/John. No number or units indicates the value is unknown, while "0" means zero. Sorting on this column is by elevation and height added together. Delivery,Atmospheric, airdrop, balloon, gun, cruise missile, rocket, surface, tower, and barge are all disallowed by the Partial Nuclear Test Ban Treaty. Sealed shaft and tunnel are underground, and remained useful under the PTBT. Intentional cratering tests are borderline; they occurred under the treaty, were sometimes protested, and generally overlooked if the test was declared to be a peaceful use.Purpose Include weapons development, weapon effects, safety test, transport safety test, war, science, joint verification and industrial/peaceful, which may be further broken down. DeviceDesignations for test items where known, "?" indicates some uncertainty about the preceding value, nicknames for particular devices in quotes. This category of information is often not officially disclosed. YieldEstimated energy yield in tons, kilotons, and megatons. A ton of TNT equivalent is defined as 4.184 gigajoules (1 gigacalorie). FalloutRadioactive emission to the atmosphere aside from prompt neutrons, where known. The measured species is only iodine-131 if mentioned, otherwise it is all species. No entry means unknown, probably none if underground and "all" if not; otherwise notation for whether measured on the site only or off the site, where known, and the measured amount of radioactivity released. References Notes 332 05:03:00.0 ALMT (6 hrs) Degelen, Semipalatinsk, Kazakhstan: 114 + tunnel,weapon effect

333 04:33:00.3 ALMT (6 hrs) Degelen, Semipalatinsk, Kazakhstan: 510p + tunnel,peaceful research

334 04:33:?? ALMT (6 hrs) Degelen, Semipalatinsk, Kazakhstan: 807 + tunnel,weapons development

335 Taiga - 1 06:59:58.4 SVET (5 hrs) Perm, Russia: 1B – cratering,earth moving

Excavation for canal. 335 Taiga - 2 06:59:58 SVET (5 hrs) Perm, Russia: 2B – cratering,industrial

Excavation for canal. 335 Taiga - 3 06:59:58 SVET (5 hrs) Perm, Russia: 3B – cratering,industrial

Excavation for canal. 336 02:33:00.0 ALMT (6 hrs) Degelen, Semipalatinsk, Kazakhstan: 148/1 + tunnel,industrial

Tested a special device for keeping radioactivity from invading ore bodies when using a bomb to fracture them. 337 03:32:59.9 ALMT (6 hrs) Degelen, Semipalatinsk, Kazakhstan: 706 + tunnel,weapons development

338 04:03:00.4 ALMT (6 hrs) Degelen, Semipalatinsk, Kazakhstan: 119 + tunnel,weapons development

339 04:02:59.7 ALMT (6 hrs) Sary-Uzen/Murzhik, Semipalatinsk, Kazakhstan: 110 + underground shaft,weapons development

340 04:04:00.1 ALMT (6 hrs) Sary-Uzen/Murzhik, Semipalatinsk, Kazakhstan: 129 + underground shaft,weapons development

341 03:56:59.8 ALMT (6 hrs) Balapan, Semipalatinsk, Kazakhstan: 1056 + underground shaft,weapons development

342 Globus 4 17:00:01.1 MSK (3 hrs) Komi, Russia: GB-4 – underground shaft,seismic sounding

Seismic probing program. 343 Globus 3 17:00:01.4 MSK (3 hrs) Komi, Russia: GB-3 – underground shaft,seismic sounding

Seismic probing program. 344 Globus 1 11:00:01.1 MSK (3 hrs) Ivanovo, Russia: GB-1 – underground shaft,seismic sounding

Venting detected

Seismic probing program. 345 - 1 05:59:55.75 MSK (3 hrs) NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-8 – tunnel,weapons development

Venting detected off site,

345 - 2 05:59:55.8 MSK (3 hrs) NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-8 + tunnel,weapons development

345 - 3 05:59:55.8 MSK (3 hrs) NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-8 + tunnel,weapons development

345 - 4 05:59:55.8 MSK (3 hrs) NZ Area B, Matochkin Shar, Novaya Zemlya, Russia: A-8 + tunnel,weapons development

346 Globus 2 10:00:00.1 MSK (3 hrs) Arkhangelsk, Russia: GB-2 – underground shaft,seismic sounding

Seismic probing program. 347 06:02:59.7 ALMT (6 hrs) Sary-Uzen/Murzhik, Semipalatinsk, Kazakhstan: 111 + underground shaft,weapons development

Venting detected

348 06:02:59.7 ALMT (6 hrs) Sary-Uzen/Murzhik, Semipalatinsk, Kazakhstan: 127 + underground shaft,weapons development

349 Sapfir (Sapphire) 05:00:01.0 SVET (5 hrs) Orenburg, Russia: E-2 – underground shaft,cavity excavation

Create reservoirs for gas storage. 350 - 1 06:02:59.9 ALMT (6 hrs) Degelen, Semipalatinsk, Kazakhstan: 105 + tunnel,weapons development

350 - 2 06:02:59.9 ALMT (6 hrs) Degelen, Semipalatinsk, Kazakhstan: 105 + tunnel,weapons development

351 07:53:59.8 ALMT (6 hrs) Degelen, Semipalatinsk, Kazakhstan: 157 – tunnel,weapon effect

352 Galit A3 (Halite) 06:59:59.0 SHET (5 hrs) Atyrau, Kazakhstan: A-III – underground shaft,industrial

Create reservoirs for gas storage; reused the cavity for test #437. 353 06:21:00.2 ALMT (6 hrs) Degelen, Semipalatinsk, Kazakhstan: 809 + tunnel,weapons development

354 06:21:?? ALMT (6 hrs) Degelen, Semipalatinsk, Kazakhstan: 609 + tunnel,weapons development

References

The official Russian list of Soviet tests.