Chemist
Email:
pswarzenski@usgs.gov
Office Phone:
831-460-7405
ORCID:
0000-0002-2232-6381
Location
400 Natural Bridges Drive
Santa Cruz
, CA
95060
US
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Polycyclic aromatic hydrocarbons (PAHs) are reported for water samples collected from the San Lorenzo River water during the rainy seasons from 2015 to 2016. Samples were collected during 2-, 5- and close to 10 year flood events.
Categories: Data;
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
Organic Geochemistry,
PCMSC,
Pacific Coastal and Marine Science Center, All tags...
San Lorenzo River,
Santa Cruz County,
State of California,
U.S. Geological Survey,
USGS,
Water-Quality Parameters,
chemical analysis,
coastal pollution,
floods,
gas chromatography,
geochemistry,
inlandWaters,
laboratory methods,
suspended material (water),
water quality,
water quality, Fewer tags
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Suspended-sediment concentrations are reported in mg/L for water samples collected from the San Lorenzo River during the rainy seasons from 2008 to 2019. Samples were collected during 2-, 5- and 10-year flood events.
Categories: Data;
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
Organic Geochemistry,
PCMSC,
Pacific Coastal and Marine Science Center, All tags...
San Lorenzo River,
Santa Cruz County,
State of California,
U.S. Geological Survey,
USGS,
Water-Quality Parameters,
chemical analysis,
coastal pollution,
floods,
geochemistry,
inland Waters,
laboratory methods,
suspended material (water),
water quality,
water quality, Fewer tags
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Passive membrane samplers—semipermeable membrane devices and polar organic chemical integrative samplers—were deployed for 22 continuous days at 7 sites along the West Maui, Hawai'i, coastline in February and March 2017 to assess organic contaminants at shallow coral reef ecosystems from diverse upstream inputs.
Categories: Data;
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
Environmental Health,
Geochemistry,
Honokeana, All tags...
Honokowai Stream,
Honolua,
Kahana,
Kahekili Beach Park,
Maui,
Olawalu,
Organic Geochemistry,
PCMSC,
Pacific Coastal and Marine Science Center,
U.S. Geological Survey,
USGS,
USGS Science Data Catalog (SDC),
Wahikuli,
Water Quality,
Water-Quality Parameters,
biota,
contamination and pollution,
coral reefs,
environment,
fragile ecosystems,
ocean,
oceans,
pharmaceutical contamination, Fewer tags
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Results of lipid biomarker concentration and compound specific isotopes analyzed from authigenic carbonates and surrounding sediment collected from Baltimore and Norfolk seep fields along the United States Atlantic Margin are presented in csv format. Samples were collected by the U.S. Geological Survey and Duke University between 2012 and 2015 using remotely operated vehicles (ROVs). Geochemical analysis was performed using gas chromatography (GC) and GC-combustion isotope ratio mass spectrometry (GC-C-IRMS).
Categories: Data;
Tags: Archaea,
Assessments,
Atlantic Ocean,
Atlantic Ocean,
Baltimore Canyon, All tags...
CMHRP,
Coastal and Marine Hazards and Resources Program,
Geochemistry,
Marine Geology,
Norfolk Canyon,
PCMSC,
Pacific Coastal and Marine Science Center,
U.S. Geological Survey,
USGS,
animal-sediment interactions,
chemical analysis,
cold seep,
environment,
gas chromatography,
geochemistry,
geochemistry,
geoscientificInformation,
light stable isotopic analysis,
marine chemistry,
methanogens,
oceans,
sediment geochemistry, Fewer tags
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Water from the San Lorenzo River in Santa Cruz, California, was sampled to analyze for polycyclic aromatic hydrocarbons (PAHs) and suspended sediment concentrations (SSC) during the rainy seasons from 2008 to 2019 following drought conditions. The samples were collected using a US D-95 depth-integrated water sampler deployed from a bridge-box platform beneath a pedestrian bridge For each suspended-sediment sample, the water was collected in a 1-liter Nalgene bottle attached to the sampling device. After 14 days of settling time, excess water and organic matter were removed from the bottle using wet suction from a vacuum pump, and the sand fraction was then separated from silt and clay by filtration through a 0.063...
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