Nina Rach | Cornell University (original) (raw)
Address: Houston, Texas, United States
less
Uploads
Papers by Nina Rach
New hard facing materials and corrosion-resistant alloys broaden the market for laser cladding se... more New hard facing materials and corrosion-resistant alloys broaden the market for laser cladding services. Laser cladding, a type of laser surface alloying, is a process that precisely applies a uniform surface coating to tools and equipment, and provides protection against corrosion and wear without inducing magnetization.
Journal of African Earth Sciences, 1989
... Livingstone, DA 1980. Environmental changes in the Nile headwaters. In : The Sahara and The N... more ... Livingstone, DA 1980. Environmental changes in the Nile headwaters. In : The Sahara and The Nile (Edited by Williams, MAJ, and Faure, H.). AA Balkema, Rotterdam, 339-359. ... 488NINA M. RACH and BRUCE R. ROSENDAHL Macfarlane, A. 1967. ...
Journal of African Earth Sciences, 1990
About 1800 krn of reconnaissance echo-sounder data have been collected from Lake Victoria. The pr... more About 1800 krn of reconnaissance echo-sounder data have been collected from Lake Victoria. The prof'des show a maximum open-basin thickness of 8 m of latest Pleistocene and Holocene fine-grained muds. Their distribution mimics bathymetry, except for locally thicker patches around bathymetric highs, which serve as current and seiche breaks. The ~ansparent sediment blanket overlies an acoustic basement that ranges from crystalline basement to a late-Tertiary, boulder-studded peneplain to coarser-grained lacustrine sediments and dewatered fine-grained mudstones, depending upon position in the lake. Correlation to discontinuities in core data suggest that the boundary between the fine-grained, acoustically transparent muds and acoustic basement represents a 14,000 year old desiccation surface of essentially lakewide extent. Many curious signatures are noted in the Lake Victoria echograms, including spiky diffractions that may represent buried boulders or gas escape structures; megaripples and sediment wave bedforms associated with current activity in the SW comer of the lake; and a tilted-block terrain in the Speke Gulf that is probably caused by recent submergence of subaefially eroded Archean crystalline rocks along uniformly-spaced joints and fractures.
New hard facing materials and corrosion-resistant alloys broaden the market for laser cladding se... more New hard facing materials and corrosion-resistant alloys broaden the market for laser cladding services. Laser cladding, a type of laser surface alloying, is a process that precisely applies a uniform surface coating to tools and equipment, and provides protection against corrosion and wear without inducing magnetization.
Journal of African Earth Sciences, 1989
... Livingstone, DA 1980. Environmental changes in the Nile headwaters. In : The Sahara and The N... more ... Livingstone, DA 1980. Environmental changes in the Nile headwaters. In : The Sahara and The Nile (Edited by Williams, MAJ, and Faure, H.). AA Balkema, Rotterdam, 339-359. ... 488NINA M. RACH and BRUCE R. ROSENDAHL Macfarlane, A. 1967. ...
Journal of African Earth Sciences, 1990
About 1800 krn of reconnaissance echo-sounder data have been collected from Lake Victoria. The pr... more About 1800 krn of reconnaissance echo-sounder data have been collected from Lake Victoria. The prof'des show a maximum open-basin thickness of 8 m of latest Pleistocene and Holocene fine-grained muds. Their distribution mimics bathymetry, except for locally thicker patches around bathymetric highs, which serve as current and seiche breaks. The ~ansparent sediment blanket overlies an acoustic basement that ranges from crystalline basement to a late-Tertiary, boulder-studded peneplain to coarser-grained lacustrine sediments and dewatered fine-grained mudstones, depending upon position in the lake. Correlation to discontinuities in core data suggest that the boundary between the fine-grained, acoustically transparent muds and acoustic basement represents a 14,000 year old desiccation surface of essentially lakewide extent. Many curious signatures are noted in the Lake Victoria echograms, including spiky diffractions that may represent buried boulders or gas escape structures; megaripples and sediment wave bedforms associated with current activity in the SW comer of the lake; and a tilted-block terrain in the Speke Gulf that is probably caused by recent submergence of subaefially eroded Archean crystalline rocks along uniformly-spaced joints and fractures.