paleoData_proxy
Physical, chemical, and/or biological systems or components that react to environmental or climatic conditions, and imprint onto the archive.
accumulation rate
Definition
TBD
source: TBD
Known synonyms
sed accumulation
NOAA PaST Thesaurus term
This concept doesn’t exist on PaST
ACL
Definition
a chain length index that is the average number of carbon atoms within organic compound chains in a sample.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
average chain length (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=4170)
Al2O3
Definition
an inorganic compound that has the chemical formula Al2O3.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
aluminum oxide (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=305)
alkenone
Definition
a ketone that is a long-chain unsaturated methyl and ethyl n-ketone produced by a few phytoplankton species of the class Prymnesiophyceae (Credit: Wikipedia).
source: PaST
Known synonyms
NOAA PaST Thesaurus term
alkenone (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=2485)
amoeba
Definition
an identifiable organism that is an ameboid protist with a test and that belongs to the kingdom Protozoa. Traditionally, those species that form large networks of anastomosing pseudopodia, despite of some of them having tests e.g. Foraminifera, are not counted amongst testate amoebae (Credit: Wikipedia).
source: PaST
Known synonyms
NOAA PaST Thesaurus term
testate amoeba (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=3577)
Ba/Al
Definition
the elemental ratio of barium to aluminum.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
barium/aluminum (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=2410)
Ba/Ca
Definition
the elemental ratio of barium to calcium.
source: PaST
Known synonyms
BaCa
NOAA PaST Thesaurus term
barium/calcium (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=317)
biomarker
Definition
TBD
source: TBD
Known synonyms
C15 fatty alcohols, C37.concentration
NOAA PaST Thesaurus term
This concept doesn’t exist on PaST
BIT
Definition
an organic compound index that is the abundance of branched tetraethers relative to isoprenoid tetraethers, indicative of the relative amounts of soil organic matter and aquatic organic matter.
source: PaST
Known synonyms
BITindex
NOAA PaST Thesaurus term
branched and isoprenoid tetraether index (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=1676)
borehole
Definition
a data type that consists of direct measurements of subsurface temperature from boreholes drilled into materials such as rock and glacier ice.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
borehole (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=114)
BSi
Definition
a hydrated, amorphous form of silicon dioxide with the formula SiO2•nH20 that is biogenically precipitated by a variety of organisms including chrysophytes, diatoms, radiolarians, silicoflagellates, and sponges (Credit: Last et al. 2001 Tracking Environmental Change Using Lake Sediments).
source: PaST
Known synonyms
NOAA PaST Thesaurus term
biogenic silica (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=4018)
bubble frequency
Definition
TBD
source: TBD
Known synonyms
NOAA PaST Thesaurus term
This concept doesn’t exist on PaST
bulk density
Definition
TBD
source: TBD
Known synonyms
gamma
NOAA PaST Thesaurus term
This concept doesn’t exist on PaST
bulk sediment
Definition
sediment from which all water has been removed.
source: PaST
Known synonyms
BulkSed
NOAA PaST Thesaurus term
dry sediment (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=1502)
C/N
Definition
the elemental ratio of carbon to nitrogen.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
carbon/nitrogen (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=750)
Ca/K
Definition
the elemental ratio of calcium to potassium.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
calcium/potassium (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=3783)
Ca/Ti
Definition
the elemental ratio of calcium to titanium.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
calcium/titanium (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=1635)
CaCO3
Definition
a carbonate with the chemical formula CaCO3 but of unspecified crystal structure.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
calcium carbonate (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=1515)
calcification rate
Definition
a formation rate that is a rate of skeletal growth in calcifying organisms, often expressed as a mass times unit area per time (e.g., g cm2/yr)
source: PaST
Known synonyms
calcification
NOAA PaST Thesaurus term
calcification rate (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=756)
calcite
Definition
a calcium carbonate with rhombohedral crystal structure.
source: PaST
Known synonyms
carbonate
Definition
an identified mineral characterized by a fundamental anionic structure of CO3(2-) (Credit: Dictionary of Geological Terms).
source: PaST
Known synonyms
authigenic carbonate, Carbonate content
NOAA PaST Thesaurus term
carbonate (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=692)
cellulose
Definition
an organooxygen compound with the general formula (C6H10O5)n and that is an important structural component of the cell walls of green plants.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
cellulose (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=689)
charcoal
Definition
a bulk biological material that consists of any black-colored plant-derived material that has had its chemical composition and structure altered as a result of heating in a fire, and retains recognizable anatomic structure of the plant material, even if only in a fragmentary form (Credit: Smol et al. 2001 Tracking Environmental Change Using Lake Sediments).
source: PaST
Known synonyms
NOAA PaST Thesaurus term
charcoal (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=630)
chironomid
Definition
an identifiable organism that belongs to one of several families in the kingdom Animalia, phylum Arthropoda, class Insecta, order Diptera.
source: PaST
Known synonyms
Chironomid, midge
chlorophyll
Definition
an organic pigment that is any of several green pigments found in cyanobacteria and the chloroplasts of algae and plants and that is composed of carbon, hydrogen, oxygen, nitrogen, and magnesium.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
chlorophyll (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=1615)
chrysophyte assemblage
Definition
an assemblage of golden or golden-brown algae that belong to the kingdom Chromista, class Chrysophyceae.
source: PaST
Known synonyms
chrysophyte
NOAA PaST Thesaurus term
chrysophyte assemblage (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=4080)
cladoceran
Definition
an identifiable organism commonly known as a water flea that belongs to the kingdom Animalia, phylum Arthropoda, class Branchiopoda, order Cladocera.
source: PaST
Known synonyms
Cladocera
NOAA PaST Thesaurus term
cladoceran (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=3587)
coccolithophore
Definition
an identifiable organism that is a unicellular phytoplankton and that belongs to the kingdom Chromista, phylum Haptophyta, class Prymnesiophyceae.
source: PaST
Known synonyms
coccolith
NOAA PaST Thesaurus term
coccolithophore (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=3250)
d13C
Definition
the ratio of two isotopes of carbon, 13C/12C, in a sample compared to that of a standard, typically the Pee Dee Belemnite, as in: ((13C/12C sample)/(13C/12C standard) - 1) x 1000.
source: PaST
Known synonyms
d13Cwax
NOAA PaST Thesaurus term
delta 13C (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=320)
d15N
Definition
the ratio of two isotopes of nitrogen, 15N/14N, in a sample compared to that of a standard, typically modern air ratios, as in: ((15N/14N sample)/(15N/14N standard) - 1) x 1000.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
delta 15N (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=322)
d15N/d40Ar
Definition
TBD
source: TBD
Known synonyms
15N/40Ar fractionation, d15Nd40Ar
NOAA PaST Thesaurus term
This concept doesn’t exist on PaST
d18O
Definition
the ratio of two isotopes of oxygen, 18O/16O, in a sample compared to that of a standard, typically either Pee Dee Belemnite or standard mean ocean water, as in: ((18O/16O sample)/(18O/16O standard) - 1) x 1000.
source: PaST
Known synonyms
cellulose d18O, delta18O, foram d18O
NOAA PaST Thesaurus term
delta 18O (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=323)
dD
Definition
the ratio of two isotopes of hydrogen, 2H/1H, in a sample compared to that of a standard, typically standard mean ocean water, as in: ((2H/1H sample)/(2H/1H standard) - 1) x 1000.
source: PaST
Known synonyms
d2H, dDwax, leaf wax, LeafWax, leafWax
NOAA PaST Thesaurus term
delta 2H (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=324)
deuterium excess
Definition
a measure of how different a delta 2H value is from the value expected from the Global Meteoric Water Line, that is delta 2H - 8* delta 18O.
source: PaST
Known synonyms
deterium excess, dx
NOAA PaST Thesaurus term
deuterium excess (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=1426)
diatom
Definition
an identifiable organism that is a unicellular phytoplankton and that belongs to the kingdom Chromista, phylum Ochrophyta, class Bacillariophyceae.
source: PaST
Known synonyms
dinocyst
Definition
an identifiable organism that belongs to the kingdom Chromista, division Pyrrophycophyta.
source: PaST
Known synonyms
dynocist MAT
NOAA PaST Thesaurus term
dinoflagellate (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=4532)
dry bulk density
Definition
TBD
source: TBD
Known synonyms
DBD
NOAA PaST Thesaurus term
This concept doesn’t exist on PaST
Eu/Zr
Definition
TBD
source: TBD
Known synonyms
NOAA PaST Thesaurus term
This concept doesn’t exist on PaST
Fe/Al
Definition
the elemental ratio of iron to aluminum.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
iron/aluminum (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=2416)
foraminifera
Definition
an identifiable organism that belongs to the kingdom Protozoa, order Foraminiferida.
source: PaST
Known synonyms
benthic foraminifers, foraminifer, N. dutertrei, planktonic foraminifera, planktonic foraminifera, transfer function, Uvigerina mediterranea
NOAA PaST Thesaurus term
foraminifer (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=2500)
GDGT
Definition
an ether that is a tetraether membrane lipid and that contains between 0 and 4 cyclopentane moieties, with an increasing number of cyclopentane moieties related to the temperature of formation.
source: PaST
Known synonyms
brGDGT
NOAA PaST Thesaurus term
glycerol dialkyl glycerol tetraether (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=1680)
grain size
Definition
the diameter of individual grains of a material such as sediment, dust, or ice.
source: PaST
Known synonyms
particle size
NOAA PaST Thesaurus term
grain size (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=1233)
HBI
Definition
an alkene that is highly-branched and composed of a number of isoprene (C5H8) units and that is produced by a relatively small number of marine and freshwater diatoms belonging to the Haslea, Navicula, Pleurosigma, and Rhizosolenia genera (Credit: Belt et al. 2013, 10.1016/j.quascirev.2012.12.001).
source: PaST
Known synonyms
NOAA PaST Thesaurus term
highly-branched isoprenoid alkene (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=2283)
historical
Definition
a data type that includes measurements of past climatic conditions and climate-dependent phenomena as observed and recorded by humans not using modern meteorological instruments.
source: PaST
Known synonyms
Documentary, historic
NOAA PaST Thesaurus term
historical (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=3460)
humification
Definition
a measure of the extent to which a peat sample has undergone decomposition and humic acids have been produced.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
humification index (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=2129)
ice accumulation
Definition
TBD
source: TBD
Known synonyms
Ice Accumulation
NOAA PaST Thesaurus term
This concept doesn’t exist on PaST
ice melt
Definition
the ice mass loss from a glacier, ice-cap, ice-sheet, or ice-shelf through phase transformation to liquid water.
source: PaST
Known synonyms
melt, melt layer
NOAA PaST Thesaurus term
ice melt (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=4951)
inorganic carbon
Definition
carbon that is derived from an inorganic source.
source: PaST
Known synonyms
TIC
NOAA PaST Thesaurus term
inorganic carbon (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=996)
IP25
Definition
a highly-branched isoprenoid alkene that contains 25 carbon atoms and that is produced selectively by sea ice diatoms (Credit: Belt et al. 2013, 10.1016/j.quascirev.2012.12.001).
source: PaST
Known synonyms
NOAA PaST Thesaurus term
ice proxy with 25 carbon atoms (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=2493)
lake level
Definition
a geographic variable that quantifies the height of the lake water surface relative to some datum.
source: PaST
Known synonyms
Lake stratigraphy and radiocarbon dating of macrofossils, lakeLevel, lakelevel, LakeStatus
NOAA PaST Thesaurus term
lake level (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=2137)
latewood cellulose
Definition
cellulose from wood that formed late in the growing season and that tends to consist of small and thick-walled cells.
source: PaST
Known synonyms
late-wood cellulose
NOAA PaST Thesaurus term
latewood cellulose (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=1589)
LDI
Definition
an organic compound index calculated based on the relative abundance of long chain alkyl 1,13- and 1,15-diols.
source: PaST
Known synonyms
long chain diol
NOAA PaST Thesaurus term
long-chain diol index (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=5705)
macrofossils
Definition
a data type that includes measurements of plant remains large enough to be observed without a microscope.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
plant macrofossils (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=4595)
magnetic
Definition
TBD
source: TBD
Known synonyms
ARM/IRM, IRM
NOAA PaST Thesaurus term
This concept doesn’t exist on PaST
magnetic susceptibility
Definition
a magnetic moment that is the degree to which a material can be magnetized in an external magnetic field.
source: PaST
Known synonyms
Magnetic Susceptibility, MS
NOAA PaST Thesaurus term
magnetic susceptibility (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=1793)
mass accumulation rate
Definition
a rate unit that is a standard measure of the accumulation or flow of mass per unit area per time.
source: PaST
Known synonyms
MAR
NOAA PaST Thesaurus term
mass per area per time unit (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=4704)
maximum latewood density
Definition
the density of xylem cells in wood that formed near the end of the growing season and that tend to be small and thick-walled.
source: PaST
Known synonyms
delta Density, MXD
NOAA PaST Thesaurus term
latewood density (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=1573)
Mg
Definition
a chemical element with atomic number 12.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
magnesium (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=891)
Mg/Ca
Definition
the elemental ratio of magnesium to calcium.
source: PaST
Known synonyms
foram Mg/Ca, Foram Mg/Ca, MgCa
NOAA PaST Thesaurus term
magnesium/calcium (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=327)
multiproxy
Definition
a material used to create a climate reconstruction that consists of proxies from more than two proxy data types.
source: PaST
Known synonyms
hybrid, Hybrid Grain Size, hybrid-ice, hybrid-lake, pore ice d2H and d18O, Ti,Ca,K
NOAA PaST Thesaurus term
multiple proxies (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=3630)
needs to be changed
Definition
TBD
source: TBD
Known synonyms
PCA
NOAA PaST Thesaurus term
This concept doesn’t exist on PaST
needsToBeChanged
Definition
TBD
source: TBD
Known synonyms
((( calcium carbonate ))) accumulation /// null, 3-OH-Fatty Acids, Age, CAS, CIA, coral, element, Element Ratio, ice, isotope, isotope diffusion, MG0, middle-wood cellulose, mineral, mineralogy, percent, sediment, Sediment, TDS, trace element / CA, TraceElement, u Cluster 2
NOAA PaST Thesaurus term
This concept doesn’t exist on PaST
ostracod
Definition
an identifiable organism that belongs to the kingdom Animalia, phylum Arthropoda, class Ostracoda.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
ostracod (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=1002)
P-aqueous
Definition
an organic compound index that measures the relative predominance of submerged versus emergent aquatic plants and that is generally calculated from n-alkanes as (C23 + C25)/(C23 + C25 + C29 + C31).
source: PaST
Known synonyms
Paq
NOAA PaST Thesaurus term
P-aqueous (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=1000103)
peat ash
Definition
TBD
source: TBD
Known synonyms
NOAA PaST Thesaurus term
This concept doesn’t exist on PaST
pH
Definition
a measure of acidity that is calculated as the negative logarithm of the hydrogen ion concentration.
source: PaST
Known synonyms
pollen
Definition
a bulk biological material that consists of microscopic grains produced by seed plants for reproduction.
source: PaST
Known synonyms
aquatic palynomorphs
radiolaria
Definition
an identifiable organism that belongs to the kingdom Protozoa, order Radiolaria.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
radiolarian (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=2796)
Rb
Definition
a chemical element with atomic number 37.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
rubidium (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=913)
Rb/Sr
Definition
TBD
source: TBD
Known synonyms
NOAA PaST Thesaurus term
This concept doesn’t exist on PaST
reflectance
Definition
an electromagnetic property that measures the amount of light that reflects from the surface of a material.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
reflectance (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=1005)
ring width
Definition
a physical measurement of the width of all or of some subcomponent of one annual ring from a tree.
source: PaST
Known synonyms
TRW
NOAA PaST Thesaurus term
ring width (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=3639)
Sr
Definition
a chemical element with atomic number 38.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
strontium (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=290)
Sr/Ca
Definition
the elemental ratio of strontium to calcium.
source: PaST
Known synonyms
Ca/Sr, Coral Sr/Ca, SrCa
NOAA PaST Thesaurus term
strontium/calcium (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=328)
stratigraphy
Definition
TBD
source: TBD
Known synonyms
Minerogenic layers, Plant detrital layers, Stratigraphy
NOAA PaST Thesaurus term
This concept doesn’t exist on PaST
TEX86
Definition
an organic compound index that is calculated as the ratio of different isoprenoidal glycerol dialkyl glycerol tetraethers.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
tetraether index of 86 carbon atoms (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=1599)
Ti
Definition
a chemical element with atomic number 22.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
titanium (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=292)
Ti/Al
Definition
the elemental ratio of titanium to aluminum.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
titanium/aluminum (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=3687)
Ti/Ca
Definition
the elemental ratio of titanium to calcium.
source: PaST
Known synonyms
ln(ti/ca), Ti/CA
NOAA PaST Thesaurus term
titanium/calcium (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=2426)
TOC
Definition
carbon that is derived from an organic source.
source: PaST
Known synonyms
NOAA PaST Thesaurus term
organic carbon (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=995)
total nitrogen
Definition
TBD
source: TBD
Known synonyms
TN
NOAA PaST Thesaurus term
This concept doesn’t exist on PaST
varve thickness
Definition
the thickness of a sublayer of or an entire annually-resolved varve in a sediment sequence.
source: PaST
Known synonyms
varve, Varve, varve property, varves
NOAA PaST Thesaurus term
varve thickness (https://www.ncei.noaa.gov/access/paleo-search/cvterms?termId=1630)