Geology topics

Herbert J. Freiberger

Publications and source records attributed to Herbert J. Freiberger.

3 recordsLinked to original sources

USGS2002

Strategic vision for the U. S. Geological Survey in the Great Lakes-St. Lawrence Region, 2001-2010

The U.S. Geological Survey's (USGS) strategic vision for the Great Lakes-St. Lawrence Region is that of a healthy ecosystem, whose ecological integrity and economic health are nurtured and sustained through sound resource-management decisions based on reliable, timely, and objective scientific information and data. The USGS is a leader in providing reliable, relevant, timely, and objective scientific data and information at local, statewide, regional, national, and international scales to assist in the management and restoration of the natural resources in the Great Lakes-St. Lawrence Region. The mission of the USGS in the Great Lakes-St. Lawrence Region is to provide natural science information to the broad community of policymakers, resource managers, regulators, scientists, and private citizens who contribute to informed decisions concerning natural-resource management practices and ecosystem quality and integrity. The strategic vision for the USGS in the Great Lakes-St. Lawrence Region is a plan to address complex issues that require integrated natural-science information. The strategic vision describes how the USGS will coordinate existing programs and draw upon the strengths of the entire organization. It provides the framework for long-term coordination and integration of USGS Programs and activities over the next decade (2001-10). The strategic vision describes the role of the USGS in the Great Lakes-St. Lawrence Region, the coordination of activities within and outside the Bureau and Department of Interior, and interactions between the USGS and its cooperators, partners, and stakeholders in the Region.

Great Lakes-St. Lawrence region↗

USGS1972

Water quality at Miami International Airport, Miami, Florida, 1971–72

The quality of water, sediment, and biota was determined at four sites in canals and drainage ditches at Miami International Airport (MIA) during high- and low-water periods and during summer and winter 1971–72. Concentrations of common ions, such as calcium, sodium, chloride, and magnesium, tended to be above average for fresh water because of periodic salt-water intrusion. Nitrogen, phosphorus, and pesticides were in higher concentrations than typical for undisturbed areas of south Florida, but not higher than usual for the urban coastal area, so it is not known to what extent these chemicals are attributable to surrounding urbanization. Heavy metals, oil and grease, and PCB's (polychlorinated biphenyls) were the best indicators of the effects of MIA on water quality. Concentations of the above were quite variable, high values for each were recorded and were probably associated with recent discharges from industrial sources. Arsenic, lead, iron, and chromium all exceeded, in one or more samples, the U.S. Public Health Service's recommended upper limits for metals in water. Only iron normally exceeds these standards in the natural waters of south Florida. PCB's were detected in most samples and were in concentrations up to 1,000 micrograms per kilogram in fish. In addition to pesticides and PCB's, another group of persistant chlorinated compounds, PCN's (polychlorinated naphthalenes) were detected in water, sediment, and fish. This is the first known detection of these compounds in the environment.

Open-File Report↗

USGS1972

Nutrient survey of surface waters in southern Florida during a wet and a dry season, September 1970 and March 1971

A mass nutrient survey of southern Florida surface waters was made in September 1970, during a period of generally high water, and again in March 1971, during a period of low water. Water samples were analyzed by automated chemical techniques for total ortho plus acid-hydrolyzable phosphorus (P-P04), ammonia nitrogen (NH3-N), nitrate nitrogen (N02-N), and nitrate nitrogen (N03-N). Phosphorus (P-P04) concentration averaged about 0.50 mg/l (milligram per liter) during the wet season; the average concentration was slightly higher during the dry season. At many sites sampled during the wet and dry seasons, less that 0.01 mg/l of phosphorus was found. At one site in Broward County near a point of sewage outfall, the concentration was 45 mg/l during the dry season. Ammonia was the most prevalent form of nitrogen detected. Concentrations of NH3-N ranged from less than 0.01 to 14 mg/l in the wet season and from less that 0.01 to 25 mg/l in the dry season. Throughout the study area, nitrite and nitrate concentrations were generally low in both wet and dry seasons. Nitrite ranged from less than 0.01 to 0.70 mg/l N02-N during the wet season and slightly lower in the dry season. Most nitrate concentrations were below 0.20 mg/l N03-N during the wet and dry seasons.

Florida↗