Pedo-Ecological Investigations, Barrow, Alaska

Brown, Jerry; Johnson, Philip L.

doi:10.21236/ad0615998

Cited by 32 publications

(27 citation statements)

References 5 publications

(5 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…214). This small increase over such a long period is consistent with a previous analysis of long-term permafrost temperature variations at Barrow for the period 1924-1997(Nelson and others, 2008Romanovsky and others, 2003;Yoshikawa and others, 2004 Brown and Johnson, 1965 figs. 215 and 216).…”

Section: Stop 5: Barrow Environmental Observatory and Early Researchsupporting

confidence: 91%

“…222). A series of papers on the initial findings (Brown, 1963(Brown, , 1965(Brown, , 1967(Brown, , 1969 included radiocarbon dating of buried organic matter recovered from the ice wedges, and chemical analyses of sediments and soil. Colinvaux (1964) provided paleoecological interpretations based on pollen recovered from the buried ice wedge (14 ± 0.5 RC ka BP) and adjacent frozen organic materials.…”

Section: Stop 7: Buried Ice Wedges and Ice-wedge Degradationmentioning

confidence: 99%

“…Figure 220. Ice-wedge stratigraphy and radiocarbon ages of surficial deposits from a tunnel through a buried ice wedge (Brown, 1963(Brown, , 1965.…”

Section: Stop 7: Buried Ice Wedges and Ice-wedge Degradationmentioning

confidence: 99%

See 2 more Smart Citations

Coastal region of northern Alaska, Guidebook to permafrost and related features

Jorgenson¹

2011

View full text Add to dashboard Cite

Section: Stop 5: Barrow Environmental Observatory and Early Researchsupporting

confidence: 91%

Section: Stop 7: Buried Ice Wedges and Ice-wedge Degradationmentioning

confidence: 99%

See 1 more Smart Citation

Coastal region of northern Alaska, Guidebook to permafrost and related features

Jorgenson¹

2011

View full text Add to dashboard Cite

“…Maps of estimated net monthly radiation at the surface ------- 87 20. Maps of estimated net monthly radiation for the earth-atmosphere up to 300 mb 21.…”

Section: Sea-level Pressure October ------------------------------56mentioning

confidence: 99%

“…January [19][20][21]1959 (Fig. AZ) The charts show strengthening zonal flow over Eurasia, with the jet stream to the north of 50'N and associated with strong cyclonic activity over Siberia and northwest Europe.…”

Section: Selected Bibliographymentioning

confidence: 99%

Introduction Northern Hemisphere 1

Wilson¹

1967

View full text Add to dashboard Cite

Freezing of the Active Layer on the Coastal Plain of the Alaskan Arctic

Osterkamp

Romanovsky

1997

Permafrost Periglac. Process.

View full text Add to dashboard Cite

Upward freezing from the bottom of the active layer started at the end of August or beginning of September when the ground surface temperature was above 0°C. About one‐third of the active layer froze upwards at the West Dock, Deadhorse and Franklin Bluffs sites. Temperatures were warmer than −1°C at the maximum depth of the active layer 20 days after the freeze‐up date with the temperature maximum near the base of the active layer. This behaviour was caused by unfrozen water in the active layer and near‐surface permafrost. A numerical model was used to determine the most appropriate unfrozen water content curves at each site. Modelling also indicates that a layer with increased unfrozen water content existed during cooling of the active layer following freeze‐up and during warming prior to thawing. At the Deadhorse site, this layer continued from the ground surface to a depth of 0.3 m in 1987 and 0.36 m in 1991. For Franklin Bluffs in 1987, for West Dock in 1988, and for Barrow in 1993 the thickness of this layer was 0.1 m and it was located between 0.2 and 0.3 m at Franklin Bluffs, between 0.15 and 0.25 m at West Dock, and between 0.21 and 0.31 m at Barrow. The unfrozen water contents for these layers were relatively large at low temperatures. Analytical calculations of the apparent thermal diffusivity showed that its observed variations with temperature were due to the latent heat effects of the unfrozen water. Microbial activity and trace gas evolution during the winter may be influenced by the presence of the unfrozen water. © 1997 John Wiley & Sons, Ltd.

show abstract

Pedo-Ecological Investigations, Barrow, Alaska

Cited by 32 publications

References 5 publications

Coastal region of northern Alaska, Guidebook to permafrost and related features

Coastal region of northern Alaska, Guidebook to permafrost and related features

Introduction Northern Hemisphere 1

Freezing of the Active Layer on the Coastal Plain of the Alaskan Arctic

Contact Info

Product

Resources

About