Principal Investigator:Porter, Trevor Licensed Year(s):
2023
2022 Summary:
This licence has been issued for the scientific research application No.5487.
During the 2022 field season, the main objectives are to collect tree-ring and wedge-ice samples that will be studied to better understand changes in climate over the last 11,700 years and to identify lake sites that will be suitable for lake-sediment coring in the early spring field season. This fieldwork will focus ...
Principal Investigator:Porter, Trevor Licensed Year(s):
2019
Summary:
This fieldwork aims to collect ‘disk’ samples from dead trees found on the surface or partially buried in sediments. Previous research in the Campbell Dolomite Upland area reported deadwood samples dating back to AD 1060. This area is well-drained, which is the ideal environment for preserving deadwood over long periods. The research team will return to this area to search for older specimens dati...
Principal Investigator:Porter, Trevor Licensed Year(s):
2017
Summary:
This purpose of this research is to better understand long-term changes in winter temperatures and atmospheric mercury (Hg) in the Mackenzie Delta area over the last 11,700 years, a period known as the Holocene. The fieldwork aims to sample 20-30 ice wedges that represent a range of Holocene time. Precipitation stable hydrogen isotopes (a temperature proxy) and elemental Hg archived in the wedge i...