NASA Earthdata CMR + NASA Data Portal2025 · Image data
Delta-X: Soil Accretion Rates from Cs-137 Activity and NUMAR Validation, MRD, LAThis dataset holds measurements of Cesium-137 (137Cs) activity sampled from sites in the Atchafalaya and Terrebonne Basins on the southern coast of Louisiana, USA. Sediment cores were taken to validate modeled estimates of soil accretion rates. The NUMAR model was designed to predict soil properties and corresponding accretion rates in marsh environments. This study explored whether the probabilis
NASA Earthdata CMRcollection
Concentration of Atmospheric 7Be in Tsukuba, JapanConcentration of 7Be in surface air was measured at Tsukuba Science City(36deg. 03min. N, 140deg. 07min. E), Japan, during the period of Jan. 1987 to Oct. 1992. Aerosol samples were collected by glass fiber filters using a high volume air sampler. Radioactivity was determined by 477-KeV gamma-ray with HPGe. The air concentration of 7Be ranged from 1 -> 6mBq/m3. Seasonal variation was observed: hig