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Kimberly K. Yates

Publications and source records attributed to Kimberly K. Yates.

40 records · Page 3Linked to original sources
USGS2007

Topobathymetric data for Tampa Bay, Florida

Topobathymetric data (“topobathy”) are a merged rendering of both topography (land elevation) and bathymetry (water depth) to provide a single product useful for inundation mapping and a variety of other applications. These data were developed using one topographic and two bathymetric datasets collected at different dates. Topography was obtained from the U.S. Geological Survey's (USGS) National Elevation Dataset (NED). Bathymetry was provided by NOAA's GEOphysical DAta System (GEODAS). For several nearshore areas within the bay GEODAS data were replaced with high resolution bathymetry acquired by NASA's Experimental Advanced Airborne Research Lidar (EAARL).

Florida↗
USGS1999

Radioisotope tracer studies of inorganic carbon and Ca in microbially derived CaCO3

Microbial calcification significantly impacts the cycling and deposition of inorganic carbon. This research employs 45 Ca and 14 C techniques as radioisotopic tracers to examine the role of cellular cycling of Ca 2+ and inorganic carbon in CaCO 3 precipitation by the unicellular green alga Nannochloris atomus. Implications of the effects of these physiological aspects on CaCO 3 precipitation and the effects of microbial calcification on CaCO 3 δ 13 C ratios are discussed. Results from pulse/chase experiments indicate that intracellular Ca 2+ is incorporated into extracellular CaCO 3 . Intracellular inorganic carbon leaks from cells within 10 to 12 s after injection of unlabelled NaHCO 3 , providing a source of inorganic carbon for extracellular CaCO 3 . Cellular expulsion of calcium plays a key role in increasing the CaCO 3 saturation state at the site of calcification. The δ 13 C ratios of microbial carbonates may vary depending on the amount of photorespiratory CO 2 incorporated.

Geochimica et Cosmochimica Acta↗