This paper presents the results of the first comprehensive estimation of the ground deposition density of radionuclides in French Polynesia resulting from the 41 atmospheric nuclear weapons tests that were conducted between 1966 and 1974 at Mururoa and Fangataufa. For each test, the deposition density at the time of arrival of fallout was estimated for 33 radionuclides either from measurements of total ground deposition or from measurements of total beta-concentration in filtered air and exposure rate at different locations in French Polynesia. The results of the measurements were mainly taken from reports that were recently de-classified by the French Ministry of Defense. The highest total deposition densities in inhabited islands and atolls occurred in Gambier: 6.1 × 107 Bq m-2 after test Aldébaran conducted on 2 July 1966 and 9.2 × 106 Bq m-2 after test Phoebé conducted on 8 August 1971. Next was Tureia with deposition densities of 1.6 × 107 Bq m-2 after test Arcturus of 2 July 1967 and 1.2 × 107 Bq m-2 after test Encelade of 12 June 1971. In Tahiti, the most populated island in French Polynesia, major fallout occurred after tests Centaure of 17 July 1974 (3.4 × 106 Bq m-2), Sirius of 4 October 1966 (4.4 × 105 Bq m-2) and Arcturus of 2 July 1967 (1.1 × 105 Bq m-2); these three tests contributed about 94% to the total deposition density of radioactive fallout in Tahiti from all 41 tests and around 85% of the 131I deposition density. The results of this study are being used to reconstruct the radiation dose to the thyroid gland for the 950 subjects of a case-control study of thyroid cancer among French Polynesians exposed as children and adolescents to fallout from the atmospheric nuclear weapons tests conducted in 1966-1974.

中文翻译：

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在 Mururoa 和 Fangataufa 环礁进行的大气核武器试验导致法属波利尼西亚放射性核素的地面沉积。

本文介绍了 1966 年至 1974 年间在 Mururoa 和 Fangataufa 进行的 41 次大气核武器试验所产生的法属波利尼西亚放射性核素地面沉积密度的首次综合估计结果。对于每次测试，通过测量总地面沉积量或通过测量法属波利尼西亚不同地点过滤空气中的总β-浓度和暴露率，估计了 33 种放射性核素在沉降物到达时的沉积密度。测量结果主要来自法国国防部最近解密的报告。在 1966 年 7 月 2 日和 9 日进行的 Aldébaran 测试后，有人居住的岛屿和环礁中最高的总沉积密度发生在 Gambier：6.1 × 107 Bq m-2。在 1971 年 8 月 8 日进行 Phoebé 测试后的 2 × 106 Bq m-2。接下来是 Tureia，在 1967 年 7 月 2 日测试 Arcturus 后沉积密度为 1.6 × 107 Bq m-2，在测试 Encelade 12 后沉积密度为 1.2 × 107 Bq m-2 1971 年 6 月。在法属波利尼西亚人口最多的岛屿大溪地，在 1974 年 7 月 17 日的半人马座 (3.4 × 106 Bq m-2)、1966 年 10 月 4 日的天狼星 (4.4 × 105 Bq m-2) 和大角星的测试之后发生了重大后果1967 年 7 月 2 日（1.1 × 105 Bq m-2）；这三个测试对大溪地所有 41 次测试的放射性沉降物总沉积密度贡献了约 94%，占 131I 沉积密度的约 85%。