Since early 1990s, the Arctic Ocean and surrounding seas have been witnessing a dramatic increase in geophysical and geological data acquisition related to the following major activities: (i) academia-and state-funded research; (ii) United Nations Convention on the Law of the Sea (UNCLOS) research; and (iii) industry-related hydrocarbon exploration programmes. The major advances have been related to the use of ice – capable research vessels assisted by icebreakers as research platforms, allowing use of a broad range of data-gathering tools to acquire a wealth of atmospheric, ice, ocean and sub-bottom data over relatively short periods of time. The data quality has increased greatly due to advances in the offboard towing equipment, GPS positioning, satellite communication and computing. In this chapter we provide a brief overview of geophysical data acquisition and geological sampling campaigns in the Arctic since 1990. Enclosure F is a part of this chapter, portraying locations of multichannel seismic reflection, wide-angle refraction profiles, sonobuoys, ocean-bottom seismometers and sampling sites including drilled wells. The corresponding metadata have been compiled in two tables in this chapter.