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Tritium Content of Rainwater from the Eastern Mediterranean Area; Teneur en tritium des eaux de pluie dans la region de la Mediterranee orientale; Soderzhanie tritiya v dozhdevoj vode, vzyatoj iz vostochnogo rajona sredizemnogo morya; Contenido del tritio en las aguas de lluvia de la zona del Mediterraneo oriental

Conference:

Abstract

About 50 samples of rainwater collected during the years 1958-1960 in Israel and neighbouring countries were assayed for their tritium content by gas counting following electrolytic enrichment. The samples included single showers collected at two stations in Israel and one in Cyprus, as well as composite samples accumulated during each rainy season at a number of sites in Israel, Cyprus, Turkey and Greece. In addition samples, of cistern water, representative of rain from the 1956/57 and 1957/58 rainy seasons, were also analyzed. From the air circulation pattern and the timing of thermonuclear tests relative to the local rainy season it is inferred that little direct tropospheric transport of tritium from the test sites into the area occurs. The measured tritium levels hence are due to tritium leakage from high altitudes into lower air layers. Mean atmospheric residence times are estimated for stratospheric tritium from different sources. There is evidence that tritium is only slowly mixed throughout the stratosphere. Systematic differences between the tritium levels at various sites are explained in terms of the different rain producing situations. It is shown that the extent of mixing of maritime and continental air masses are of paramount importance for the resulting tritium content  More>>
Authors:
Gat, J R; Karfunkel, U; Nir, A [1] 
  1. Weizmann Institute of Science, Rehovoth (Israel)
Publication Date:
Jan 15, 1962
Product Type:
Conference
Resource Relation:
Conference: Symposium on Tritium in the Physical and Biological Sciences, Vienna (Austria), 3-10 May 1961; Other Information: 2 figs., 4 tabs., 12 refs.; Related Information: In: Tritium in the Physical and Biological Sciences. V. 1. Proceedings of a Symposium| 380 p.
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AIR; LAYERS; LEAKS; MEDITERRANEAN SEA; METEOROLOGY; RAIN; STRATOSPHERE; TRITIUM; WATER
OSTI ID:
22028505
Research Organizations:
International Atomic Energy Agency, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 0074-1884; TRN: XA12R0257116771
Submitting Site:
INIS
Size:
page(s) 41-54
Announcement Date:
Jan 24, 2013

Conference:

Citation Formats

Gat, J R, Karfunkel, U, and Nir, A. Tritium Content of Rainwater from the Eastern Mediterranean Area; Teneur en tritium des eaux de pluie dans la region de la Mediterranee orientale; Soderzhanie tritiya v dozhdevoj vode, vzyatoj iz vostochnogo rajona sredizemnogo morya; Contenido del tritio en las aguas de lluvia de la zona del Mediterraneo oriental. IAEA: N. p., 1962. Web.
Gat, J R, Karfunkel, U, & Nir, A. Tritium Content of Rainwater from the Eastern Mediterranean Area; Teneur en tritium des eaux de pluie dans la region de la Mediterranee orientale; Soderzhanie tritiya v dozhdevoj vode, vzyatoj iz vostochnogo rajona sredizemnogo morya; Contenido del tritio en las aguas de lluvia de la zona del Mediterraneo oriental. IAEA.
Gat, J R, Karfunkel, U, and Nir, A. 1962. "Tritium Content of Rainwater from the Eastern Mediterranean Area; Teneur en tritium des eaux de pluie dans la region de la Mediterranee orientale; Soderzhanie tritiya v dozhdevoj vode, vzyatoj iz vostochnogo rajona sredizemnogo morya; Contenido del tritio en las aguas de lluvia de la zona del Mediterraneo oriental." IAEA.
@misc{etde_22028505,
title = {Tritium Content of Rainwater from the Eastern Mediterranean Area; Teneur en tritium des eaux de pluie dans la region de la Mediterranee orientale; Soderzhanie tritiya v dozhdevoj vode, vzyatoj iz vostochnogo rajona sredizemnogo morya; Contenido del tritio en las aguas de lluvia de la zona del Mediterraneo oriental}
author = {Gat, J R, Karfunkel, U, and Nir, A}
abstractNote = {About 50 samples of rainwater collected during the years 1958-1960 in Israel and neighbouring countries were assayed for their tritium content by gas counting following electrolytic enrichment. The samples included single showers collected at two stations in Israel and one in Cyprus, as well as composite samples accumulated during each rainy season at a number of sites in Israel, Cyprus, Turkey and Greece. In addition samples, of cistern water, representative of rain from the 1956/57 and 1957/58 rainy seasons, were also analyzed. From the air circulation pattern and the timing of thermonuclear tests relative to the local rainy season it is inferred that little direct tropospheric transport of tritium from the test sites into the area occurs. The measured tritium levels hence are due to tritium leakage from high altitudes into lower air layers. Mean atmospheric residence times are estimated for stratospheric tritium from different sources. There is evidence that tritium is only slowly mixed throughout the stratosphere. Systematic differences between the tritium levels at various sites are explained in terms of the different rain producing situations. It is shown that the extent of mixing of maritime and continental air masses are of paramount importance for the resulting tritium content of rain and that the dimen- sions of the Mediterranean sea are small compared to the scale of meteorological phenomena involved. (author) [French] La teneur en tritium d'une cinquantaine d'echantillons d'eau de pluie preleves au cours des annees 1958-60 en Israel et dans des pays voisins a ete determinee au moyen de compteurs a gaz, apres enrichissement electrolytique. L'analyse a porte sur des echantillons de diverses precipitations, provenant de deux stations israeliennes et d'une station cypriote, ainsi que sur des echantillons d'eaux accumules pendant chaque saison des pluies dans plusieurs regions d'Israel, de Chypre, de Turquie et de Grece. En outre, on a analyse des echantillons d'eaux de citerne accumulees pendant la saison des pluies de 1956/57 et 1957/58. Compte tenu de la date des essais thermonucleaires, des courants atmospheriques et de la saison locale des pluies, on peut conclure qu'il n'y a aucun transport tropospherique direct de tritium provenant de la zone des essais vers la region consideree. Les concentrations de tritium mesurees sont dues au passage de tritium des hautes altitudes dans les couches atmospheriques inferieures. On a evalue la duree moyenne du sejour dans l'atmosphere du tritium stratospherique provenant de diverses sources. Les constatations faites semblent prouver que le tritium ne se melange que lentement aux masses d'air de la stratosphere. Les differences constantes entre les concentrations de tritium a divers endroits sont expliquees en tenant compte des differentes situations qui sont a l'origine des pluies. On montre que le melange des masses d'air maritimes et continentales a une influence primordiale sur la teneur en tritium des eaux de pluie et que l'etendue de la mer Mediterranee est faible par rapport a l'ampleur des phenomenes meteorologiques en jeu. (author) [Spanish] Los autores analizaron unas 50 muestras de agua de lluvia recogidas durante los anos 1958 a 1960 en Israel y paises vecinos a fin de determinar su contenido de tritio por recuento gaseoso precedido de un enriquecimiento electrolitico. Entre las muestras figuraban algunas de precipitaciones aisladas, recogidas en dos estaciones en Israel y una en Chipre, asi como agua acumulada durante cada temporada de lluvia en una serie de lugares en Israel, Chipre, Turquia y Grecia. Ademas se analizaron muestras de aguas de cisterna representativas de las lluvias caidas durante las temporadas 1956-1957 y 1957-1958. La configuracion de las corrientes atmosfericas y la relacion cronologica que existe entre los ensayos de armas termonucleares y la temporada local de lluvias indican que no se produce ningun transporte troposferico directo de tritio del lugar de la explosion a la zona estudiada. Por lo tanto, la presencia de tritio en las capas inferiores de la atmosfera se debe a la difusion desde las capas superiores. Los tiempos medios de permanencia atmosferica del tritio han sido calculados para el tritio estratosferico procedente de distintas fuentes. Parece demostrado que el proceso de mezcla del tritio en la estratosfera es lento. Las diferencias entre las concentraciones de tritio que aparecen sistematicamente en distintos lugares se explican por las circunstancias variables que determinan la precipitacion pluvial. Se demuestra que el grado en que se mezclan las masas de aire maritimo y continental ejerce una influencia decisiva sobre el contenido de tritio de las aguas pluviales, y que las dimensiones del Mar Mediterraneo son pequenas en comparacion con la escala en que suceden los fenomenos meteorologicos que intervienen en dicho proceso. (author) [Russian] V techenie 1958-1960 gg. okolo 50 prob dozhdevoj vody bylo vzyato v Izraile i sosednikh stranakh i podvergnuto kolichestvennomu analizu na soderazhnie v nikh tritiya s pomoshch'yu gazovogoschetchika posle ehlektroliticheskogo obogashcheniya. Syuda vkhodili proby otdel'nykh livnej, vzyatye na dvukh stantsiyakh v Izraile i odnoj stantsii na Kipre, a takzhe proby vody, sobrannye v techenie kazhdogo sezona dozhdej v ryade mest v Izraile, na Kipre, Turtsii i Gretsii. Krome togo, byli takzhe proanalizirovany proby vody, vzyatoj iz vodoemov, kotorye sootvetstvuyut sezonam dozhdej v 1956/57 i v 1957/58 gg. Na osnovanii skhemy tsirkulyatsii vozdukha i vremeni provedeniya ispytatel'nykh termoyadernykh vzryvov v svyazi s mestnym sezonom dozhdej ustanovleno, chto ne proiskhodit pryamogo troposfernogo perenosa tritiya iz rajonov ispytanij v dannyj rajon. Sledovatel'no, izmerennye urovni tritiya vyzyvayutsya proniknoveniem tritiya iz bol'shikh vysot v nizkie sloi vozdukha. Opredelyaetsya srednee vremya prebyvaniya v atmosfere stratosfernogo tritiya iz razlichnykh istochnikov. Sovershenno ochevidno, chto tritij lish' slegka smeshan vo vsej stratosfere. Sistematicheskie razlichiya v urovnyakh tritiya v razlichnykh mestakh ob{sup y}asnyayutsya razlichnoj situatsiej, vyzyvayushchej vypadenie dozhdej. Dokazyvaetsya, chto stepen' smesheniya morskikh i kontinental'nykh mass vozdukha imeet pervostepennoe znachenie dlya vytekayushchego iz ehtogo soderzhaniya triyati v dozhdevoj vode i chto razmery Sredizemnogo morya maly po sravneniyu s masshtabom sootvetstvuyushchikh meteorologicheskikh yavlenij. (author)}
place = {IAEA}
year = {1962}
month = {Jan}
}