Application LANDSAT imagery to geologic mapping in the ice-free valleys of Antarctica

The author has identified the following significant results. Studies in the Ice-Free Valleys are resulted in the compilation of a sizeable library of maps and publications. Rock reflectance measurements were taken during the Antarctic summer of 1973. Spectral reflectance of rocks (mostly mafic lava flows) in the McMurdo and Ice-Free Valleys areas were measured using a filter wheel photometer equipped to measure reflectances in the four Landsat bands. A series of samples were collected at regular intervals across a large differentiated, mafic sill near Lake Vida. Chemical analyses of the sample suggest that the tonal variations in this sill are controlled by changes in the iron content of the rock. False color images were prepared for a number of areas by the diazo method and with an optical multispectral biviewer. These images were useful in defining boundaries of sea ice, snow cover, and in the study of ablating glaciers, but were not very useful for rock discrimination

Inland extent of the Weddell Sea Rift imaged by new aerogeophysical data

Peer reviewedPostprin

A General size-biased distribution

We generalize a size-biased distribution related to the Riemann xi function using the work of Ferrar. Some analysis and properties of this more general distribution are offered as well

Gendered Language and the Science of Colonial Silk

This article uses pronominal resilience to suggest how we can identify women's contributions to the colonial silk industry. By comparing different editions of silkworm treatises, all of which were published between 1650-1655 and circulated within the Hartlib Circle's circum-Atlantic network of readers (Bermuda, Germany, England, Ireland, Virginia), I find a pattern in the gendered language of the texts. Books that describe worms grown by women use feminine pronouns (she/her) to classify worms throughout the lifecycle, while books that describe worms grown by men begin with masculine pronouns (he/his) and become feminine (she/her) when the worms become reproductive in the third stage of the lifecycle