On 1 July 1993, after five years of drilling, the Greenland Ice Sheet Project Two (GISP2,) penetrated through the ice sheet and 1.55 meters into bedrock recovering an ice core 3053.44 meters in depth, the deepest ice core thus far recovered in the world.

The Greenland Ice Sheet Project (GISP) was a decade-long project to drill ice cores in Greenland that involved scientists and funding agencies from Denmark, Switzerland and the United States.

The National Science Foundation Ice Core Facility (NSF-ICF) — formerly the U.S. National Ice Core Laboratory (NICL) — is a facility for storing, curating, and studying meteoric ice cores recovered from the glaciated regions of the world.

2024年4月22日 · ABSTRACT SUPPLIED BY ORIGINATOR: The 3-km-long Greenland Ice Sheet Project 2 (GISP2) ice core presents a 100,000+-year detailed oxygen isotope profile covering almost a full glacial-interglacial cycle.

Confident paleothermometry is provided by site-specific calibrations using ice-isotopic ratios, borehole temperatures, and gas-isotopic ratios.

On I July 1993, after five years of drilling, the Greenland Ice Sheet Project Two (GISP2, Figure 1) penetrated several meters of silty ice and reached bedrock at a depth of 3053.44 meters (Figure 2), and then shortly thereafter penetrated 1.55 meters into the bedrock (Figure 6 and 7) producing the deepest ice core thus far recovered in the world.

GISP2（亦作GISPⅡ，Greenland Ice Sheet Project Two），格陵兰岛冰盖第二计划。 1991年夏季，美国在 格陵兰岛 冰盖的顶部各自开始了宏伟的冰芯钻探计划，定名为“GISP2”，与欧洲共同体“ GRIP ”计划冰钻的孔位仅仅相距30公里。 1992年的7月20日，欧洲共同体8国联合实施的“GRIP”冰芯钻探顺利穿透冰盖，到达基岩表面，获取冰芯2980米。 欧洲人的辉煌胜利使美国人感到十分难堪，美国科学基金会在大量增加经费的同时，限令执行计划的科学家必须在1993年 …

In ice core: Core sites …to 1992 the joint European Greenland Ice-core Project (GRIP) at Summit station in east-central Greenland drilled through 3,029 metres (9,935 feet) of ice before striking bedrock. The following year GISP-2 was completed at a site 30 km (19 miles) to the west of the GRIP site. This effort reached a… Read More; Younger ...

Analysis of the GISP2 core at Summit has included detailed examination of its crystalline structure, an important property in determining the rheological behavior of the ice and its potential impact on the preservation of paleoclimate records in the deeper parts of the ice sheet.

1993年12月9日 · Here we present electrical conductivity records for the Greenland Ice Sheet Project 2 (GISP2) and Greenland Ice-core Project (GRIP) ice cores, drilled 28 km apart to enable direct comparison...