Biologist
Email:
pbliznik@usgs.gov
Office Phone:
303-541-3026
|
There are over 10,000 hydrothermal features in Yellowstone National Park (YNP), where waters have pH values ranging from about 1 to 10 and surface temperatures up to 95 °C. Active geothermal areas in YNP provide insight into a variety of processes occurring at depth, such as water-rock and oxidation-reduction (redox) reactions, the formation of alteration minerals, and microbial (thermophile) metabolism in extreme environments. Investigations into the water chemistry of YNP hot springs, geysers, fumaroles, mud pots, streams, and rivers have been conducted by the U.S. Geological Survey (USGS) and other earth-science organizations and academic institutions since 1888 (Gooch and Whitfield, 1888). More recently, USGS...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Geochemistry,
Hydrology,
USGS Science Data Catalog (SDC),
Water Quality,
Yellowstone National Park, All tags...
Yellowstone National Park, thermal waters, arsenic, mercury, sulfur,
geoscientificInformation,
inlandWaters, Fewer tags
|
The USGS National Field Manual (NFM) states “A representative sample is one that typifies in time and space that part of the aqueous system to be studied” and “obtaining representative samples is of primary importance for a relevant description of the environment.” The NFM contains detailed chapters on the best practices for representative and contamination free sampling of major and trace metals (U.S. Geological Survey 2006). However, as analytical capabilities have advanced and new preservation methods developed, there is a need to study the effectiveness of various amounts of nitric acid preservation for trace metals and major cations in surface water and groundwater. The amount of nitric acid prescribed by...
|
This dataset is in support of the publication "The addition of 144Nd to routine ICP-MS analysis as a quick screening tool for approximating earth elements (Q-STAR) in natural waters". It contains inductively coupled plasma mass spectrometry (ICP-MS) data from samples analyzed at the National Water Quality Laboratory (NWQL) from April 2021-May 2022. Data listed include estimated neodymium (Nd) concentrations and site numbers.Site numbers can be used to search published USGS data bases such as the National Water Information System, NWIS for previously published sample information and is shown here to highlight unpublished estimated Nd concentrations from this work. A set of archived samples from NWQL analyses were...
|
The data presented in this data release includes 11 field/water quality parameters, concentrations of 16 nutrients/anions, dissolved organic carbon, 14 organic contaminants, net estrogenicity concentrations, and 51 inorganic constituents in surface water collected twice from 28 stream sites and collected once from 2 stream sites in the Shenandoah Valley (Virginia and West Virginia, USA), in the summer of 2021 (Table_1_Sites and Table_2_Methods). The estrogenicity, inorganic, and organic chemical characteristics of river waters were analyzed using 19 separate analytical methods at 5 laboratories (Table_2_Methods). Surface water was analyzed for water quality and nutrients (Table_3_WQ_Nutrients_Anions_DOC), toxic...
|
Surface water, pore water, pond bottom sediments, and groundwater were sampled within and downgradient from five groundwater flow-through ponds that ranged from oligotrophic to eutrophic in Cape Cod, Massachusetts during different seasons from 2015 – 2018. The sampled ponds included Ashumet, Santuit, Snake, Shubael, and Longs. Pore water was collected between 15 to 100 cm below the pond bottoms on the upgradient and downgradient sides of the ponds. Groundwater was collected on the downgradient side where the pond water recharges the groundwater resulting in a “pond shadow”. Within the pond shadow, groundwater is under the direct influence of surface water. The pond shadows were sampled vertically and at various...
Categories: Data;
Tags: Aquatic Biology,
Barnstable,
Cape Cod,
Environmental Health,
Genetics, All tags...
Geochemistry,
Hydrology,
Pocasset,
Sandwich,
USGS Science Data Catalog (SDC),
Water Quality,
microbial community,
nitrogen, Fewer tags
|
View more...
|