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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 2019-315-FA

Other ID: none

Status: Completed

Organization(s): USGS, St. Petersburg Coastal and Marine Science Center

Funding Program(s): Climate Variability (GX.19.MN00.E8Z32.00)

Principal Investigator(s): Julie Richey

Affiliate Investigator(s): Wilson Ramirez, UPR-Mayaguez

Information Specialist(s): Jennifer Flannery

Data Type(s): Environmental Data: CTD, Environmental Data: Depth, Environmental Data: Dissolved Oxygen, Environmental Data: pH, Environmental Data: Sediment Properties, Environmental Data: Temperature, Sampling: Biology, Sampling: Chemistry, Sampling: Geology

Scientific Purpose/Goals: Lake Enriquillo, located in the Dominican Republic, is an important location to examine ocean-continent interactions due to its remote location far from anthropogenic influences. Lake Enriquillo is a hypersaline lake, which leads to excellent sediment preservation, and is situated to record the balance of evaporation and precipitation. The purpose of this trip is to collect sediment samples from Lake Enriquillo for organic geochemical analyses. These geochemical analyses include faunal assemblages, alkane biomarkers, alkenone sea surface temperature reconstruction, and analysis of lipids (dinosterol). Additional water samples will be collected over a depth profile and analyzed for salinity, pH, total alkalinity, and oxygen isotopes. The ultimate goal is to reconstruct temperature, evaporation, and precipitation patterns over the past few centuries.

Vehicle(s): None

Start Port/Location: St. Petersburg, FL, USA

End Port/Location: St. Petersburg, FL, USA

Start Date: 2019-04-23

End Date: 2019-05-07

Equipment Used: Conductivity, Temperature and Depth (CTD) Logger/Probe, Other, YSI Professional Plus multiparameter meter, Grab Sampler, Other

Information to be Derived: water samples: salinity, pH, total alkalinity, and oxygen isotopes sediment samples: faunal assemblages, alkane biomarkers, alkenone sea surface temperature reconstruction, and analysis of lipids.

Summary of Activity and Data Gathered: water samples: salinity, pH, total alkalinity, and oxygen isotopes

Staff: Jennifer Flannery, Julie Richey, Hunter Wilcox

Affiliate Staff:

Notes: Entries for this field activity are based on entries from Field Activity 2018-357-FA

Location:

Dominican Republic, Lake Enriquillo

Boundaries
North: 18.59759939 South: 18.38375004 West: -71.87826075 East: -71.42204737

Platform(s):

Publications

Portals/Viewers

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Conductivity, Temperature and Depth (CTD) Logger/Probe --- CTD
Other --- --- ---
YSI Professional Plus multiparameter meter --- Conductivity
Depth
Dissolved Oxygen
Nitrate
ORP
pH
Temperature
Grab Sampler --- Biology
Geology
Other --- --- ---

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