Geochemical characterization and material properties of coastal permafrost near Drew Point, Alaska ...

Permafrost cores (4.5-7.5 m long) were collected April 10th-19th, 2018, along a geomorphic gradient near Drew Point, Alaska to characterize active layer and permafrost geochemistry and material properties. Cores were collected from a young drained lake basin, an ancient drained lake basin, and prima...

Full description

Bibliographic Details
Main Authors: Bristol, Emily M, Connolly, Craig T, Lorenson, Thomas D, Richmond, Bruce M, Ilgen, Anastasia G, Choens, Robert Charles, Bull, Diana L, Kanevskiy, Mikhail, Iwahana, Go, Jones, Benjamin M, McClelland, James W
Format: Dataset
Language:English
Published: Environmental Data Initiative 2020
Subjects:
permafrost
Alaska
Online Access:https://dx.doi.org/10.6073/pasta/cc4d53a91ed873765224fcb6d09f5eb7
https://portal.edirepository.org/nis/mapbrowse?packageid=knb-lter-ble.17.1
Description
Summary:Permafrost cores (4.5-7.5 m long) were collected April 10th-19th, 2018, along a geomorphic gradient near Drew Point, Alaska to characterize active layer and permafrost geochemistry and material properties. Cores were collected from a young drained lake basin, an ancient drained lake basin, and primary surface that has not been reworked by thaw lake cycles. Measurements of total organic carbon (TOC) and total nitrogen (TN) content, stable carbon isotope ratios (δ13C) and radiocarbon (14C) analyses of bulk soils/sediments were conducted on 45 samples from 3 permafrost cores. Porewaters were extracted from these same core sections and used to measure salinity, dissolved organic carbon (DOC), total dissolved nitrogen (TDN), anion (Cl-, Br-, SO4 2-, NO3 -), and trace metal (Ca, Mn, Al, Ba, Sr, Si, and Fe) concentrations. Radiogenic strontium (87Sr/86Sr) was measured on a subset of porewater samples. Cores were also sampled for material property measurements such as dry bulk density, water content, and grain size ...

Similar Items