Olivia Cheriton
Oceanographer, Pacific Coastal and Marine Science Center
I am a physical oceanographer who studies waves, hydrodynamics, and transport processes in coral reef environments. I also have expertise in internal waves and water-column dynamics. I use direct measurements to answer questions about how physical processes -across a range of temporal and spatial scales- affect coastal ecosystems, and to investigate how these patterns might alter with climate change.
Research Interests
Waves, hydrodynamics, and transport processes in coral reef environments
Effects of climate change on coastal physical and biological processes
Coastal ocean physical processes and effects on nearshore ecosystems
Internal tides and nonlinear internal waves over continental shelves
Fine-scale gradients in biological and suspended particulate material
Professional Experience
2012-present: Oceanographer, USGS Coastal and Marine Hazards and Resources Program
2011-2012: Postdoctoral Researcher, Moss Landing Marine Laboratories
2010-2011: Postdoctoral Researcher, University of California at Santa Cruz
2008-2012: Postdoctoral Researcher, Partnership for Interdisciplinary Studies of Coastal Oceans (PISCO), University of California at Santa Cruz
2008: Teaching Assistant & Lecturer, Partnership for Interdisciplinary Studies of Coastal Oceans (PISCO) Summer Course “Coastal Physical Oceanography and Marine Ecosystems,” University of California Santa Cruz
Education and Certifications
PhD: 2008, University of California Santa Cruz, Santa Cruz, CA
BA: 2002, Grinnell College, Grinnell, IA
Science and Products
Filter Total Items: 33
Extreme low-frequency waves on the Ofu, American Samoa, reef flat
The southern fringing reef along Ofu, American Samoa, has been a focus of coral research owing to the presence of super-heated pools on the reef flat, where corals thrive in elevated sea temperatures. Here, we present the first documentation of exceptionally large low-frequency (periods > 100 s) waves over this reef flat. During a large, southerly swell event, low-frequency waves on the inner reef
Authors
Olivia Cheriton, Curt Storlazzi, Ferdinand Oberle, Kurt J. Rosenberger, Eric K. Brown
Combining field observations and high-resolution numerical modeling to demonstrate the effect of coral reef roughness on turbulence and its implications for reef restoration design
Coral reefs are effective natural barriers that protect adjacent coastal communities from hazards such as erosion and storm-induced flooding. However, the degradation of coral reefs compromises their ability to protect against these hazards, making degraded reefs a target for restoration. There have been limited field and numerical modeling studies conducted to understand how an increase in coral
Authors
Benjamin K Norris, Curt Storlazzi, Andrew W. M. Pomeroy, Kurt J. Rosenberger, Joshua B. Logan, Olivia Cheriton
Carbonate sediment transport across coral reefs: A comparison of fringing vs. barrier reefs
Considerable uncertainty remains in the budgets of carbonate sediment on reef lined coasts, particularly with respect to the supply of sediment to a reef flat that is then transported throughout a reef system. In this study, we re-examine two recent studies, one on a barrier reef bounded by channels that incise the reef, and one on a fringing reef without channels. Results indicate that the presen
Authors
Kurt J. Rosenberger, Curt Storlazzi, Olivia Cheriton, Mark L. Buckley, Andrew Pomeroy, Ryan Lowe, Jeff Hansen
Modeling fluvial sediment plumes: Impacts to coral reefs
To help guide watershed restoration to reduce the impacts to adjacent coral reefs, the United States Geological Survey and Deltares acquired and analyzed oceanographic and sedimentologic data off 5 West Maui watersheds to calibrate and validate physics-based, numerical hydrodynamic and sediment transport models of the study area. The results indicated sheltered sites are impacted by terrestrial se
Authors
Curt Storlazzi, Luuk van der Heijden, Olivia Cheriton, Robert T. McCall, Gundula Winter
Wave-scale observations of sediment resuspension and subsequent transport across a fringing reef flat
During a 3-month deployment on a broad, fringing reef flat in Moloka’i, Hawai’i, we observed over 28,000 wave-driven resuspension (WDR) events of coarse-grained sediment in order to identify major factors. These events were short-lived (2-11 s) and distinct from the longer-duration patterns of water-column backscatter. The wave-driven transport of WDR events was onshore, but the net cross-shore tr
Authors
Olivia Cheriton, Curt Storlazzi, Kurt J. Rosenberger, Joshua B. Logan, Andrew W. M. Pomeroy, Mark L. Buckley, Jeff E. Hansen, Ryan J. Lowe
Observations of coastal circulation, waves, and sediment transport along West Maui, Hawaiʻi (November 2017– March 2018), and modeling effects of potential watershed restoration on decreasing sediment loads to adjacent coral reefs
Terrestrial sediment discharging from watersheds off West Maui, Hawaiʻi, has been documented as a primary stressor to local coral reefs, causing coral reef health to decline. The U.S. Geological Survey acquired and analyzed physical oceanographic and sedimentologic field data off the coast of West Maui to calibrate and validate physics-based, numerical hydrodynamic and sediment transport models of
Authors
Curt D. Storlazzi, Olivia M. Cheriton, Katherine M. Cronin, Luuk H. van der Heijden, Gundula Winter, Kurt J. Rosenberger, Joshua B. Logan, Robert T. McCall
Physicochemical coastal groundwater dynamics between Kauhakō Crater lake and Kalaupapa settlement, Moloka‘i, Hawai‘i
Land-based sources of groundwater pollution can be a critical threat to coral reefs, and a better understanding of “ridge-to-reef” water movement is required to advance management and coral survival in the Anthropocene. In this study a more complete understanding of the geological, atmospheric, and oceanic drivers behind coastal groundwater exchange on the Kalaupapa peninsula, on Moloka‘i, Hawai‘i
Authors
Ferdinand Oberle, Olivia Cheriton, Peter W Swarzenski, Eric K. Brown, Curt D. Storlazzi
The role of pH up-regulation in response to nutrient-enriched, low-pH groundwater discharge
Coral reefs and their ecosystems are threatened by both global stressors, including increasing sea-surface temperatures and ocean acidification (OA), and local stressors such as land-based sources of pollution that can magnify the effects of OA. Corals can physiologically control the chemistry of their internal calcifying fluids (CF) and can thereby regulate their calcification process. Specifical
Authors
Nancy G. Prouty, Marlene Wall, J. Fietzke, Olivia Cheriton, Eleni Anagnostou, Brian Phillip, Adina Paytan
Characterization of the biological, physical, and chemical properties of a toxic thin layer in a temperate marine system
The distribution of plankton in the ocean is patchy across a wide range of spatial and temporal scales. One type of oceanographic feature that exemplifies this patchiness is a ‘thin layer’. Thin layers are subsurface aggregations of plankton that range in vertical thickness from centimeters to a few meters, which may extend horizontally for kilometers and persist for days. We undertook a field cam
Authors
Margaret A McManus, Adam T Greer, Amanda HV Timmerman, Jeff C Sevadjian, C. Brock Woodson, Robert Cowen, Derek A Fong, Stephen G. Monismith, Olivia Cheriton
Bomb-produced radiocarbon across the South Pacific Gyre — A new record from American Samoa with utility for fisheries science
Coral skeletal structures can provide a robust record of nuclear bomb produced 14C with valuable insight into air-sea exchange processes and water movement with applications to fisheries science. To expand these records in the South Pacific, a coral core from Tutuila Island, American Samoa was dated with density band counting covering a 59-yr period (1953–2012). Seasonal signals in elemental ratio
Authors
Allen Andrews, Nancy G. Prouty, Olivia Cheriton
Land-based sediment sources and transport to southwest Puerto Rico coral reefs after Hurricane Maria, May 2017 to June 2018
The effects of runoff from land on nearshore ecosystems, including coral reef communities, are influenced by both sediment supply and removal by coastal processes. Integrated studies across the land-sea interface describing sources and transport of terrestrial sediment and its nearshore fate allow reef protection initiatives to target key onshore and offshore areas. Geochemical signatures in the f
Authors
Renee K. Takesue, Clark E Sherman, Aaron O. Reyes, Olivia Cheriton, Natalia I. Ramirez, Roberto Viqueira Ríos, Curt Storlazzi
Rapid observations of ocean dynamics and stratification along a steep island coast during Hurricane María
Hurricanes are extreme storms that affect coastal communities, but the linkages between hurricane forcing and ocean dynamics remain poorly understood. Here, we present full water column observations at unprecedented resolution from the southwest Puerto Rico insular shelf and slope during Hurricane María, representing a rare set of high-frequency, subsurface, oceanographic observations collected al
Authors
Olivia Cheriton, Curt Storlazzi, Kurt J. Rosenberger, Clark E Sherman, Wilford Schmidt
Anthropogenic Nutrient Loading and Coral Health at Ofu, American Samoa
Declining water quality poses a significant and persistent threat to coral reefs worldwide, contributing to their widespread degradation. Identifying the specific impacts of water quality stressors is challenging due to the complex interplay of various physical and biological factors affecting reef health. Submarine groundwater discharge (SGD) plays a crucial role in transporting nutrients into...
USGS CoastCam at Isla Verde, Puerto Rico: 2018-2019 Calibration and GNSS Topography Survey Data
A digital video camera was installed at Isla Verde, Puerto Rico (PR) and faced northeast along the beach. Every hour during daylight hours, daily from February 1, 2019, to July 15, 2019, the camera collected raw video and produced snapshots and time-averaged image products. This data release includes the necessary intrinsic orientation (IO) and extrinsic orientation (EO) calibration data to utiliz
USGS CoastCam at Isla Verde, Puerto Rico: 2018-2019 Timestack Imagery and Coordinate Data
A digital video camera was installed at Isla Verde Beach in San Juan, Puerto Rico (PR) and faced northeast along the beach. Every hour during daylight hours, daily from February 1, 2019, to July 15, 2019, the camera collected raw video and produced snapshots and time-averaged image products. One such product is a "runup timestack". Runup timestacks are images created by sampling a cross-shore arra
Time-series data of water surface elevation, waves, currents, temperature, and turbidity collected between November 2017 and March 2018 off the west coast of Maui, Hawaii, USA
Time-series data of water surface elevation, waves, currents, temperature, and turbidity collected between November 2017 and March 2018 off the west coast of Maui, Hawaii, USA. The data are available in NetCDF format, grouped together in zip files by instrument site location. These data support a modeling study on the effects of potential watershed restoration on decreasing sediment loads to adjac
Cross-reef wave and water level data from coral reef environments (ver. 3.0, January 2024)
Coral reefs provide important protection for tropical coastlines against the impact of large waves and storm damage by energy dissipation through wave breaking and bottom friction. However, climate change and sea level rise have led to growing concern for how the hydrodynamics across these reefs will evolve and whether these changes will leave tropical coastlines more vulnerable to large wave even
Jurabi, Exmouth, Western Australia, 2016 Coral Reef Circulation and Sediment Dynamics Experiment
Carbonate reefs are a major source of sediment for coastlines in much of the tropical regions of the world, contributing to significant shoreline accretion and beach nourishment. A collaborative experiment between the U.S. Geological Survey and the University of Western Australia was conducted on Ningaloo Reef, northwest Australia, to investigate this problem and determine the primary oceanographi
Modeled effects of depth and semidiurnal temperature fluctuations on predictions of year that coral reef locations reach annual severe bleaching for various global climate model projections
Using global climate model projections of sea-surface temperature at coral reef sites, we modeled the effects of depth and exposure to semidiurnal temperature fluctuations to examine how these effects may alter the projected year of annual severe bleaching for coral reef sites globally. Here we present the first global maps of the effects these processes have on bleaching projections for three IPC
Waiakane, Molokai, HI, 2018 Coral Reef Circulation and Sediment Dynamics Experiment
Coral reefs generate significant volumes of carbonate sediment that becomes the primary source of beach material along many low-latitude shorelines that protect hundreds of millions of people globally. Despite this fact, there is little understanding of the specific processes that transport the carbonate sediment produced on the outer portions of coral reefs to the shoreline, let alone how those p
Observations of coral reef oceanographic and groundwater properties off Makua, Kauai, HI, USA, August 2016
Pervasive and sustained coral diseases contribute to the systemic degradation of reef ecosystems, however, an understanding of the physicochemical controls on a coral disease event is still largely lacking. Water circulation and residence times and submarine groundwater discharge all determine the degree to which reef organisms are exposed to the variable chemistry of overlying waters; understandi
Time series data of oceanographic conditions from La Parguera, Puerto Rico, 2017-2018 Coral Reef Circulation and Sediment Dynamics Experiment
Time-series data of water surface elevation, waves, currents, temperature, and salinity collected between 17 May 2017 and 17 Jan 2018 off the southwest coast of Puerto Rico in support of a study on circulation and sediment transport dynamics over coral reefs. The data are available in NetCDF format, grouped together in zip files by instrument site location. A README.txt file details the files cont
Science and Products
Filter Total Items: 33
Extreme low-frequency waves on the Ofu, American Samoa, reef flat
The southern fringing reef along Ofu, American Samoa, has been a focus of coral research owing to the presence of super-heated pools on the reef flat, where corals thrive in elevated sea temperatures. Here, we present the first documentation of exceptionally large low-frequency (periods > 100 s) waves over this reef flat. During a large, southerly swell event, low-frequency waves on the inner reef
Authors
Olivia Cheriton, Curt Storlazzi, Ferdinand Oberle, Kurt J. Rosenberger, Eric K. Brown
Combining field observations and high-resolution numerical modeling to demonstrate the effect of coral reef roughness on turbulence and its implications for reef restoration design
Coral reefs are effective natural barriers that protect adjacent coastal communities from hazards such as erosion and storm-induced flooding. However, the degradation of coral reefs compromises their ability to protect against these hazards, making degraded reefs a target for restoration. There have been limited field and numerical modeling studies conducted to understand how an increase in coral
Authors
Benjamin K Norris, Curt Storlazzi, Andrew W. M. Pomeroy, Kurt J. Rosenberger, Joshua B. Logan, Olivia Cheriton
Carbonate sediment transport across coral reefs: A comparison of fringing vs. barrier reefs
Considerable uncertainty remains in the budgets of carbonate sediment on reef lined coasts, particularly with respect to the supply of sediment to a reef flat that is then transported throughout a reef system. In this study, we re-examine two recent studies, one on a barrier reef bounded by channels that incise the reef, and one on a fringing reef without channels. Results indicate that the presen
Authors
Kurt J. Rosenberger, Curt Storlazzi, Olivia Cheriton, Mark L. Buckley, Andrew Pomeroy, Ryan Lowe, Jeff Hansen
Modeling fluvial sediment plumes: Impacts to coral reefs
To help guide watershed restoration to reduce the impacts to adjacent coral reefs, the United States Geological Survey and Deltares acquired and analyzed oceanographic and sedimentologic data off 5 West Maui watersheds to calibrate and validate physics-based, numerical hydrodynamic and sediment transport models of the study area. The results indicated sheltered sites are impacted by terrestrial se
Authors
Curt Storlazzi, Luuk van der Heijden, Olivia Cheriton, Robert T. McCall, Gundula Winter
Wave-scale observations of sediment resuspension and subsequent transport across a fringing reef flat
During a 3-month deployment on a broad, fringing reef flat in Moloka’i, Hawai’i, we observed over 28,000 wave-driven resuspension (WDR) events of coarse-grained sediment in order to identify major factors. These events were short-lived (2-11 s) and distinct from the longer-duration patterns of water-column backscatter. The wave-driven transport of WDR events was onshore, but the net cross-shore tr
Authors
Olivia Cheriton, Curt Storlazzi, Kurt J. Rosenberger, Joshua B. Logan, Andrew W. M. Pomeroy, Mark L. Buckley, Jeff E. Hansen, Ryan J. Lowe
Observations of coastal circulation, waves, and sediment transport along West Maui, Hawaiʻi (November 2017– March 2018), and modeling effects of potential watershed restoration on decreasing sediment loads to adjacent coral reefs
Terrestrial sediment discharging from watersheds off West Maui, Hawaiʻi, has been documented as a primary stressor to local coral reefs, causing coral reef health to decline. The U.S. Geological Survey acquired and analyzed physical oceanographic and sedimentologic field data off the coast of West Maui to calibrate and validate physics-based, numerical hydrodynamic and sediment transport models of
Authors
Curt D. Storlazzi, Olivia M. Cheriton, Katherine M. Cronin, Luuk H. van der Heijden, Gundula Winter, Kurt J. Rosenberger, Joshua B. Logan, Robert T. McCall
Physicochemical coastal groundwater dynamics between Kauhakō Crater lake and Kalaupapa settlement, Moloka‘i, Hawai‘i
Land-based sources of groundwater pollution can be a critical threat to coral reefs, and a better understanding of “ridge-to-reef” water movement is required to advance management and coral survival in the Anthropocene. In this study a more complete understanding of the geological, atmospheric, and oceanic drivers behind coastal groundwater exchange on the Kalaupapa peninsula, on Moloka‘i, Hawai‘i
Authors
Ferdinand Oberle, Olivia Cheriton, Peter W Swarzenski, Eric K. Brown, Curt D. Storlazzi
The role of pH up-regulation in response to nutrient-enriched, low-pH groundwater discharge
Coral reefs and their ecosystems are threatened by both global stressors, including increasing sea-surface temperatures and ocean acidification (OA), and local stressors such as land-based sources of pollution that can magnify the effects of OA. Corals can physiologically control the chemistry of their internal calcifying fluids (CF) and can thereby regulate their calcification process. Specifical
Authors
Nancy G. Prouty, Marlene Wall, J. Fietzke, Olivia Cheriton, Eleni Anagnostou, Brian Phillip, Adina Paytan
Characterization of the biological, physical, and chemical properties of a toxic thin layer in a temperate marine system
The distribution of plankton in the ocean is patchy across a wide range of spatial and temporal scales. One type of oceanographic feature that exemplifies this patchiness is a ‘thin layer’. Thin layers are subsurface aggregations of plankton that range in vertical thickness from centimeters to a few meters, which may extend horizontally for kilometers and persist for days. We undertook a field cam
Authors
Margaret A McManus, Adam T Greer, Amanda HV Timmerman, Jeff C Sevadjian, C. Brock Woodson, Robert Cowen, Derek A Fong, Stephen G. Monismith, Olivia Cheriton
Bomb-produced radiocarbon across the South Pacific Gyre — A new record from American Samoa with utility for fisheries science
Coral skeletal structures can provide a robust record of nuclear bomb produced 14C with valuable insight into air-sea exchange processes and water movement with applications to fisheries science. To expand these records in the South Pacific, a coral core from Tutuila Island, American Samoa was dated with density band counting covering a 59-yr period (1953–2012). Seasonal signals in elemental ratio
Authors
Allen Andrews, Nancy G. Prouty, Olivia Cheriton
Land-based sediment sources and transport to southwest Puerto Rico coral reefs after Hurricane Maria, May 2017 to June 2018
The effects of runoff from land on nearshore ecosystems, including coral reef communities, are influenced by both sediment supply and removal by coastal processes. Integrated studies across the land-sea interface describing sources and transport of terrestrial sediment and its nearshore fate allow reef protection initiatives to target key onshore and offshore areas. Geochemical signatures in the f
Authors
Renee K. Takesue, Clark E Sherman, Aaron O. Reyes, Olivia Cheriton, Natalia I. Ramirez, Roberto Viqueira Ríos, Curt Storlazzi
Rapid observations of ocean dynamics and stratification along a steep island coast during Hurricane María
Hurricanes are extreme storms that affect coastal communities, but the linkages between hurricane forcing and ocean dynamics remain poorly understood. Here, we present full water column observations at unprecedented resolution from the southwest Puerto Rico insular shelf and slope during Hurricane María, representing a rare set of high-frequency, subsurface, oceanographic observations collected al
Authors
Olivia Cheriton, Curt Storlazzi, Kurt J. Rosenberger, Clark E Sherman, Wilford Schmidt
Anthropogenic Nutrient Loading and Coral Health at Ofu, American Samoa
Declining water quality poses a significant and persistent threat to coral reefs worldwide, contributing to their widespread degradation. Identifying the specific impacts of water quality stressors is challenging due to the complex interplay of various physical and biological factors affecting reef health. Submarine groundwater discharge (SGD) plays a crucial role in transporting nutrients into...
USGS CoastCam at Isla Verde, Puerto Rico: 2018-2019 Calibration and GNSS Topography Survey Data
A digital video camera was installed at Isla Verde, Puerto Rico (PR) and faced northeast along the beach. Every hour during daylight hours, daily from February 1, 2019, to July 15, 2019, the camera collected raw video and produced snapshots and time-averaged image products. This data release includes the necessary intrinsic orientation (IO) and extrinsic orientation (EO) calibration data to utiliz
USGS CoastCam at Isla Verde, Puerto Rico: 2018-2019 Timestack Imagery and Coordinate Data
A digital video camera was installed at Isla Verde Beach in San Juan, Puerto Rico (PR) and faced northeast along the beach. Every hour during daylight hours, daily from February 1, 2019, to July 15, 2019, the camera collected raw video and produced snapshots and time-averaged image products. One such product is a "runup timestack". Runup timestacks are images created by sampling a cross-shore arra
Time-series data of water surface elevation, waves, currents, temperature, and turbidity collected between November 2017 and March 2018 off the west coast of Maui, Hawaii, USA
Time-series data of water surface elevation, waves, currents, temperature, and turbidity collected between November 2017 and March 2018 off the west coast of Maui, Hawaii, USA. The data are available in NetCDF format, grouped together in zip files by instrument site location. These data support a modeling study on the effects of potential watershed restoration on decreasing sediment loads to adjac
Cross-reef wave and water level data from coral reef environments (ver. 3.0, January 2024)
Coral reefs provide important protection for tropical coastlines against the impact of large waves and storm damage by energy dissipation through wave breaking and bottom friction. However, climate change and sea level rise have led to growing concern for how the hydrodynamics across these reefs will evolve and whether these changes will leave tropical coastlines more vulnerable to large wave even
Jurabi, Exmouth, Western Australia, 2016 Coral Reef Circulation and Sediment Dynamics Experiment
Carbonate reefs are a major source of sediment for coastlines in much of the tropical regions of the world, contributing to significant shoreline accretion and beach nourishment. A collaborative experiment between the U.S. Geological Survey and the University of Western Australia was conducted on Ningaloo Reef, northwest Australia, to investigate this problem and determine the primary oceanographi
Modeled effects of depth and semidiurnal temperature fluctuations on predictions of year that coral reef locations reach annual severe bleaching for various global climate model projections
Using global climate model projections of sea-surface temperature at coral reef sites, we modeled the effects of depth and exposure to semidiurnal temperature fluctuations to examine how these effects may alter the projected year of annual severe bleaching for coral reef sites globally. Here we present the first global maps of the effects these processes have on bleaching projections for three IPC
Waiakane, Molokai, HI, 2018 Coral Reef Circulation and Sediment Dynamics Experiment
Coral reefs generate significant volumes of carbonate sediment that becomes the primary source of beach material along many low-latitude shorelines that protect hundreds of millions of people globally. Despite this fact, there is little understanding of the specific processes that transport the carbonate sediment produced on the outer portions of coral reefs to the shoreline, let alone how those p
Observations of coral reef oceanographic and groundwater properties off Makua, Kauai, HI, USA, August 2016
Pervasive and sustained coral diseases contribute to the systemic degradation of reef ecosystems, however, an understanding of the physicochemical controls on a coral disease event is still largely lacking. Water circulation and residence times and submarine groundwater discharge all determine the degree to which reef organisms are exposed to the variable chemistry of overlying waters; understandi
Time series data of oceanographic conditions from La Parguera, Puerto Rico, 2017-2018 Coral Reef Circulation and Sediment Dynamics Experiment
Time-series data of water surface elevation, waves, currents, temperature, and salinity collected between 17 May 2017 and 17 Jan 2018 off the southwest coast of Puerto Rico in support of a study on circulation and sediment transport dynamics over coral reefs. The data are available in NetCDF format, grouped together in zip files by instrument site location. A README.txt file details the files cont