noaa-lake-8652 Bear Lake, Utah-Idaho 19,000 Year Diatom Data Moser, K.A.; Kimball, P. Bear Lake, Utah-Idaho 19,000 Year Diatom Data 2009-03-01 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/8652 Investigator K.A. Moser Investigator P. Kimball earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Nitzschia fonticola earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Achnanthes saccula earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula reinhardtii earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Diploneis oblongella earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cymbella minuta earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Hantzschia virgata var. capitellata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Stephanodiscus niagarae earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclotella schumannii earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Amphora perpusilla earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cymbella naviculiformis earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Gomphonema angustum earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Thalassiosira visurgis earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Pseudostaurosira brevistriata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Staurosira brevistriata rhomboid earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Fragilaria capucina earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Achnanthes clevei earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula cryptocephala earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Diploneis marginestriata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Caloneis sp. Bear Lake earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cymbella caespitosa earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cymbella mesiana earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Surirella bohemica earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Surirella linearis earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cosmioneis pusilla var. incognita earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula scutelloides earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Stauroneis javanica earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Neidium iridis earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula pseudoplacentula earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Staurosira elliptica earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Nitzschia palea earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Achnanthes ziegleri earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula cryptotenella earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclotella meneghiniana earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclotella ocellata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cocconeis placentula var. lineata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Amphora ovalis earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cymbella sinuata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Surirella ovalis earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Epithemia frickei earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Skeletonema subsalsum earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Nitzschia sp. earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Nitzschia gracilis earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Frustulia rhomboides var. viridula earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Pinnularia borealis earth science paleoclimate paleolimnology sample identification,null,null,null,null,paleolimnology,null,null,C,null earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Staurosira brevistriata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Staurosirella pinnata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Staurosirella pinnata var. accumunata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Achnanthes lanceolata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula meniscus earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula oblonga earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula sp. earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cocconeis disculus earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Amphora inariensis earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Amphora libyca earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cymbella helvetica earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Diatoma vulgaris earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cymbella cuspidata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Denticula kuetzingii earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula nivaloides earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Stephanodiscus sp. earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Gyrosigma attenuatum earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Staurosira construens earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Fragilaria tenera earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Nitzschia pura earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Nitzschia solita earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Achnanthes rossii earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula halophila earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula salinarum earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula tuscula earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Stephanodiscus minutulus earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Stephanodiscus medius earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Diatoma tenue earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Stauroneis anceps earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Amphora aequalis earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Amphora pediculus earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Encyonema alpinum earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Surirella bifrons earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Epithemia turgida var. granulata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Rhopalodia gibba earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Stauroneis phoenicenteron earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Pinnularia lundii earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Gyrosigma nodiferum earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Nitzschia dissipata earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Achnanthes curtissima earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula platystoma earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclotella michiganiana earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclotella rossii earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclotella bodanica var. affinis earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclostephanos novaezeelandiae earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cocconeis placentula var. euglypta earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Pinnularia viridis earth science paleoclimate paleolimnology identified diatom,null,null,count,null,paleolimnology,null,null,N,total diatoms earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Surirella turgida earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,unspecified diatom unidentified girdle view earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula capitata var.lueneburgensis earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula pupula earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula crucicula earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Caloneis schumanniana earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cymbella reichardtii earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Hantzschia amphioxys earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclotella antiqua earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cymbella tynnii earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cymbella aspera earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Surirella minuta earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula globulifera earth science paleoclimate paleolimnology depth,null,null,centimeter,null,paleolimnology,null,null,N,actual earth science paleoclimate paleolimnology depth,null,null,centimeter,null,paleolimnology,null,null,N,adjusted earth science paleoclimate paleolimnology age,null,null,calendar year before present,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Staurosira brevistriata oval earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Staurosirella leptostauron earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Achnanthes minutissima earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula rhynchocephala earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cyclotella sp. earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Diploneis elliptica earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Cocconeis stauroneiformis earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Stauroneis anceps var. siberica earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Surirella elegans earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula pygmaea earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Caloneis silicula earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Neidium distinctepunctatum earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Neidium dubium earth science paleoclimate paleolimnology identified diatom,null,null,percent,null,paleolimnology,null,null,N,Navicula placentula earth science paleoclimate paleolimnology population abundance geoscientificInformation 14569 cal yr BP 744 cal yr BP Complete 42 42 -111.3333 -111.3333 1805 1805 Continent North America United States Of America Utah Bear Lake Utah/Idaho>LATITUDE 42>LONGITUDE -111.3333 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

325 Broadway, E/NE31

Boulder CO 80305-3328 USA online ASCII Moser, K.A., Kimball, P. 2009. A 19,000-year record of hydrologic and climatic change inferred from diatoms from Bear Lake, Utah and Idaho. Geological Society of America Special Paper, 450, 229-246.

Changes in diatom fossil assemblages from lake sediment cores indicate variations in hydrologic and climatic conditions at Bear Lake (Utah-Idaho) during the late glacial and Holocene. From 19.1 to 13.8 cal ka there is an absence of well-preserveddiatoms because prolonged ice cover and increased turbidity from glacier-fed Bear River reduced light and limited diatom growth. The first well-preserved diatoms appear at 13.8 cal ka. Results of principal components analysis (PCA) of the fossildiatom assemblages from 13.8 cal ka to the present track changes related to fluctuations of river inputs and variations of lake levels. Diatom abundance data indicate that the hydrologic balance between 13.8 and 7.6 cal ka is strongly tied to river inputs,whereas after 7.6 cal ka the hydrologic balance is more influenced by changes in lake evaporation. Wet conditions maintained high river inputs from 13.8 to 10.8 cal ka and from 9.2 to 7.6 cal ka, with a dry interval between 10.8 and 9.2 cal ka. After 9.2 cal kauntil 2.9 cal ka lake levels were high except for two periods, one between 7.6 and 5.8 cal ka and one between 4.3 and 3.8 cal ka, as a result of decreased effective moisture. After 2.9 cal ka, fossil diatom assemblages suggest drier conditions until 1.6 cal ka to the present, when fragments of large, pennate diatoms appear, possibly the result of a rapid lake transgression. Although similarities exist between the Bear Lake records and other western hydrologic and climatic records, the covariations are not strong. Our data suggest that climatic regimes at Bear Lake have changedfrequently over time, perhaps as a consequence of the position of several important climatic boundaries near Bear Lake. STUDY NOTES: Diatom data from sediment cores 96-1, 96-2, and 98-10, Bear Lake, Utah-Idaho (USA).

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/utah/bearlake/bearlake2009diatom.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/utah/bearlake/bearlake2009diatom.xls USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11