Air reverse circulation at the hole bottom in ice-core drilling

Autor:	ZHENGYI HU, PAVEL TALALAY, ZHICHUAN ZHENG, PINLU CAO, GUITAO SHI, YUANSHENG LI, XIAOPENG FAN, HONGMEI MA
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	ice coring ice engineering polar firn Environmental sciences GE1-350 Meteorology. Climatology QC851-999
Zdroj:	Journal of Glaciology, Vol 65, Pp 149-156 (2019)
Druh dokumentu:	article
ISSN:	0022-1430 1727-5652
DOI:	10.1017/jog.2018.95
Popis:	Ice-core drilling to depths of 200–300 m is an important part of research studies concerned with paleoclimate reconstruction and anthropogenic climate change. However, conventional drilling methods face difficulties due to firn permeability. We have developed an electromechanical ice-core drill with air reverse circulation at the hole bottom. We believe that the new drilling system will recover ice cores faster than shallow auger drills, with high efficiency and low energy consumption. The theoretically estimated up-hole speed of the airflow should be not
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/424efc6fcdf846b9a36e01f0e3b0fd47 Zobrazit plný text záznamu View record in DOAJ