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USGS Publications
Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS. Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.
Ocean floor manganese deposits
Much of the dissolved Mn delivered to the oceans is slowly oxidized and precipitated alongside varying amounts of Fe into Mn and ferromanganese (FeMn) mineral deposits that occur extensively in the deep ocean wherever sediment accumulation is low and substrate is available. FeMn crusts grow as pavements on rock outcrops throughout the...
Mizell, Kira; Hein, James R. Mainstems: A logical data model implementing mainstem and drainage basin feature types based on WaterML2 Part 3: HY Features concepts
The Mainstems data model implements the catchment and flowpath concepts from WaterML2 Part 3: Surface Hydrology Features (HY_Features) for persistent, cross-scale, identification of hydrologic features. The data model itself provides a focused and lightweight method to describe hydrologic networks with minimum but sufficient...
Blodgett, David L.; Johnson, J. Micheal; Sondheim, Mark; Wieczorek, Michael; Frazier, Nels Material failure and caldera collapse: Insights from the 2018 Kilauea eruption
The Failure Forecast Method (FFM) was introduced as an empirical model for forecasting catastrophic material failures related to natural hazards, such as landslides and volcanic eruptions, with mixed success. During the 2018 eruption of Kilauea volcano, Hawaii, the draining of the summit magma reservoir into the Lower East Rift Zone resulted in...
Tepp, Gabrielle Investigation of land surface phenology detections in shrublands using multiple scale satellite data
Shrublands occupy about 13% of the global land surface, contain about one-third of the biodiversity, store about half of the global terrestrial carbon, and provide many ecosystem services to a large amount of world's human population and livestock. Because phenology is a sensitive indicator of the response of shrubland ecosystems to climate change...
Peng, Dailiang; Wang, Yan; Xian, George Z.; Huete, Alfredo R; Huang, Wenjiang; Shen, Miaogen; Wang, Fumin; Yu, Le; Liu, Liangyun; Xie, Qiaoyun; Liu, Lingling; Zhang, Xiaoyang Photoperiodic regulation of pituitary thyroid-stimulating hormone and brain deiodinase in Atlantic salmon
Seasonal timing is important for many critical life history events of vertebrates, and photoperiod is often used as a reliable seasonal cue. In mammals and birds, it has been established that a photoperiod-driven seasonal clock resides in the brain and pituitary, and is driven by increased levels of pituitary thyroid stimulating hormone (TSH) and...
Irachi, Shotaro; Hall, Daniel J.; Fleming, Mitchell S; Maugers, Gersende; Bjornsson, Bjorn; Dufour, Sylvie; Uchida, Katsuhisa; McCormick, Stephen D. Free-roaming horses disrupt greater sage-grouse lekking activity in the Great Basin
Greater Sage-Grouse (Centrocercus urophasianus; hereafter, sage-grouse) and free-roaming horses (Equus caballus) co-occur within large portions of sagebrush ecosystems within the Great Basin of western North America. In recent decades, sage-grouse populations have declined substantially while concomitant free-roaming horse populations have...
Munoz, Diana A.; Coates, Peter S.; Ricca, Mark A. The influence of legacy contamination on the transport and bioaccumulation of mercury within the Mobile River Basin
Past industrial use and subsequent release of mercury (Hg) into the environment have resulted in severe cases of legacy contamination that still influence contemporary Hg levels in biota. While the bioaccumulation of legacy Hg is commonly assessed via concentration measurements within fish tissue, this practice becomes difficult in regions of high...
Janssen, Sarah E.; Tate, Michael T.; Krabbenhoft, David P.; DeWild, John F.; Ogorek, Jacob M.; Babiarz, Christopher L.; Sowers, Anthony; Tuttle, Peter L. Elucidating controls on cyanobacteria bloom timing and intensity via Bayesian mechanistic modeling
The adverse impacts of harmful algal blooms (HABs) are increasing worldwide. Lake Erie is a North American Great Lake highly affected by cultural eutrophication and summer cyanobacterial HABs. While phosphorus loading is a known driver of bloom size, more nuanced yet crucial questions remain. For example, it is unclear what mechanisms are...
Del Giudice, Dario; Fang, Shiqi; Scavia, Donald; Davis, Timothy W.; Evans, Mary Anne; Obenour, Daniel R Seasonality of acarological risk of exposure to Borrelia miyamotoi from questing life stages of Ixodes scapularis collected from Wisconsin and Massachusetts, USA
Measures of acarological risk of exposure to Ixodes scapularis-borne disease agents typically focus on nymphs; however, the relapsing fever group spirochete, Borrelia miyamotoi can be transmitted transovarially, and I. scapularis larvae are capable of transmitting B. miyamotoi to their hosts. To quantify the...
Han, Seungeun; Hickling, Graham J.; Ogden, Nicholas H.; Ginsberg, Howard S.; Kobbekaduwa, Vishvapali; Rulison, Eric L.; Beati, Lorenza; Tsao, Jean I. Trends in nitrogen, phosphorus, and sediment concentrations and loads in streams draining to Lake Tahoe, California, Nevada, USA
Lake Tahoe, a large freshwater lake of the eastern Sierra Nevada in California and Nevada, has 63 tributaries that are sources of nutrients and sediment to the lake. The Tahoe watershed is relatively small, and the surface area of the lake occupies about 38% of the watershed area (1313 km2). Only about 6% of the watershed is urbanized or...
Domagalski, Joseph L.; Morway, Eric D.; Alvarez, Nancy L.; Hutchins, Juliet; Rosen, Michael R.; Coats, Robert Hydrocarbons to carboxyl-rich alicyclic molecules: A continuum model to describe biodegradation of petroleum-derived dissolved organic matter in contaminated groundwater plumes
Relationships between dissolved organic matter (DOM) reactivity and chemical composition in a groundwater plume containing petroleum-derived DOM (DOMHC) were examined by quantitative and qualitative measurements to determine the source and chemical composition of the compounds that persist downgradient. Samples were collected from a transect down...
Podgorski, David C.; Zito, Phoebe; Kellerman, Anne M.; Bekins, Barbara A.; Cozzarelli, Isabelle M.; Smith, Donald F.; Cao, Xiaoyan; Schmidt-Rohr, Klaus; Wagner, Sasha; Stubbins, Aron; Spencer, Robert G. M. Exposure of an early to middle Noachian valley network in three dimensions on Mars
We document a set of channels in a section of the Martian cratered highlands located between crustal massifs northeast of Hellas Planitia that are visible in cross section and planview >200 m below the surface. The morphometry and spatial distribution of the outcrops provide concrete geological evidence of a dynamic aqueous system in a...
Skinner, James A.; Fortezzo, Corey M.; Mouginis-Mark, Peter J.