@article{fdi:010056720,
  title = {{I}ntermediate-depth ice coring of high-altitude and polar glaciers with a lightweight drilling system},
  author = {{Z}agorodnov, {V}. and {T}hompson, {L}. {G}. and {G}inot, {P}atrick and {M}ikhalenk, {V}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} total of 11 ice cores to a maximum depth of 460 m have been obtained over the past 3 years from high-altitude glaciers on the saddle of {M}ount {B}ona and {M}ount {C}hurchill in {A}laska (designated {B}-{C}), and on {Q}uelccaya ice cap and {N}evado {C}oropuna in {P}eru. {I}ce coring was conducted using an intermediate-depth drilling system. {T}he system includes an electromechanical drill ({EMD}) and an ethanol thermal electric drill ({ETED}). {T}he {EMD} permitted an average ice-core production rate ({ICPR}) of 7.0 m h(-1) down to 150 m. {A}n average {ICPR} of 2 m h(-1) to 460 m depth was possible with the {ETED}. {T}he quality of the {B}-{C} ice cores is better than that of cores previously drilled with an {EMD} and {ETED} system. {A} new cutter design, drilling with a lubricant/cutting fluid and a new anti-torque assembly were tested in the laboratory and in glacier boreholes. {W}e examine the performance of the drills in cold and temperate ice and in clean and particle-laden ice. {T}he influence of the ethanol drilling fluid on ice-core isotopic, ionic and dust composition is discussed.},
  keywords = {},
  booktitle = {},
  journal = {{J}ournal of {G}laciology},
  volume = {51},
  numero = {174},
  pages = {491--501},
  ISSN = {0022-1430},
  year = {2005},
  DOI = {10.3189/172756505781829269},
  URL = {https://www.documentation.ird.fr/hor/fdi:010056720},
}