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209 Results Found

  • Technical Note
  • Open Access
7 Citations
2,460 Views
15 Pages

25 July 2022

Long-term sea surface salinity (SSS) in the East China Sea (ECS) was estimated based on Ocean Color Climate Change Initiative (OC-CCI) data using machine learning during the summer season (June to September) from 1997 to 2021. Changjiang diluted wate...

  • Article
  • Open Access
1 Citations
1,541 Views
22 Pages

27 October 2024

In response to the demand for high-precision acoustic support under the condition of limited data, this study utilized high-resolution reanalysis data and in situ observation data to extract the Kuroshio Extension Front (KEF) section through front-li...

  • Article
  • Open Access
247 Views
33 Pages

Multi-Task Learning for Ocean-Front Detection and Evolutionary Trend Recognition

  • Qi He,
  • Anqi Huang,
  • Lijia Geng,
  • Wei Zhao and
  • Yanling Du

28 November 2025

Ocean fronts are central to upper-ocean dynamics and ecosystem processes, yet recognizing their evolutionary trends from satellite data remains challenging. We present a 3D U-Net-based multi-task framework that jointly performs ocean-front detection...

  • Review
  • Open Access
11 Citations
4,558 Views
20 Pages

Ocean Fronts and Their Acoustic Effects: A Review

  • Yuyao Liu,
  • Zhou Meng,
  • Wen Chen,
  • Yan Liang,
  • Wei Chen and
  • Yu Chen

17 December 2022

As one of the widespread physical phenomena in the global ocean system, the ocean front has a very important influence on underwater sound propagation. Firstly, this paper systematically reviews several methods for the detection of ocean fronts in th...

  • Review
  • Open Access
95 Citations
14,403 Views
22 Pages

27 February 2021

This paper provides a concise review of the remote sensing of ocean fronts in marine ecology and fisheries, with a particular focus on the most popular front detection algorithms and techniques, including those proposed by Canny, Cayula and Cornillon...

  • Article
  • Open Access
2 Citations
2,923 Views
18 Pages

SQNet: Simple and Fast Model for Ocean Front Identification

  • Rui Niu,
  • Yiyang Tan,
  • Feng Ye,
  • Fang Gong,
  • Haiqing Huang,
  • Qiankun Zhu and
  • Zengzhou Hao

28 April 2023

The ocean front has a non-negligible role in global ocean–atmosphere interactions, marine fishery production, and the marine military. Hence, obtaining the positions of the ocean front is crucial in oceanic research. At present, the positioning...

  • Article
  • Open Access
9 Citations
3,827 Views
19 Pages

1 November 2021

The Southern Ocean front (SOF) is an important factor that affects the heat exchange and material transport of the Southern Ocean. In the past two decades, with the advancements in satellite remote-sensing technology, the study of the spatio-temporal...

  • Review
  • Open Access
2 Citations
2,697 Views
16 Pages

18 October 2023

This review will serve as an entry point for international researchers who would like to tap into the vast scientific potential of Chinese-language literature on oceanic fronts. We focused on observational physical oceanography studies of marine fron...

  • Article
  • Open Access
10 Citations
2,451 Views
22 Pages

12 September 2021

As a mesoscale phenomenon of the ocean, the ocean front can directly affect the structural characteristics of sound speed profiles and further affect the acoustic propagation characteristics of the sea area. In this paper, we use the fuzzy C-means (F...

  • Article
  • Open Access
1 Citations
934 Views
20 Pages

Oceanic fronts delineate the boundaries between distinct water masses within the ocean, typically marked by shifts in weather patterns and the generation of oceanic circulation. These fronts are identified in research on intelligent oceanic front det...

  • Article
  • Open Access
11 Citations
2,567 Views
18 Pages

8 November 2021

As one of the most common mesoscale phenomena in the ocean, the ocean front is defined as a narrow transition zone between two water masses with obviously different properties. In this study, we proposed an ocean front reconstruction method based on...

  • Article
  • Open Access
7 Citations
1,885 Views
23 Pages

At present, some shortcomings of the research on coupling modeling of the oceanic front–sound field may need attention: (1) Most of the acoustic propagation simulation is based on ideal front models, but the application of investigated marine d...

  • Article
  • Open Access
5 Citations
4,213 Views
18 Pages

Ocean Front Detection with Glider and Satellite-Derived SST Data in the Southern California Current System

  • Frank C. Olaya,
  • Reginaldo Durazo,
  • Vera Oerder,
  • Enric Pallàs-Sanz and
  • Joaquim P. Bento

10 December 2021

This study proposes a method to detect ocean fronts from in situ temperature and density glider measurements. This method is applied to data collected along the CalCOFI Line 90, south of the California Current System (CCS), over the 2006–2013 p...

  • Technical Note
  • Open Access
1 Citations
2,883 Views
16 Pages

27 September 2022

The application of remote sensing observations in estimating ocean sub-surface temperatures has been widely adopted. Machine learning-based methods in particular are gaining more and more interest. While there is promising relevant progress, most tem...

  • Article
  • Open Access
1 Citations
1,972 Views
14 Pages

2 January 2023

We present large eddy simulations of a midlatitude open ocean front using a modified state-of-the-art computational fluid dynamics code. We investigate the energy and information fluxes at the submesoscale/small-scale range in the absence of any atmo...

  • Article
  • Open Access
13 Citations
4,211 Views
20 Pages

Characteristics of Three-Dimensional Sound Propagation in Western North Pacific Fronts

  • Jiaqi Liu,
  • Shengchun Piao,
  • Minghui Zhang,
  • Shizhao Zhang,
  • Junyuan Guo and
  • Lijia Gong

19 September 2021

Oceanic fronts involved by ocean currents led to strong gradients of temperature, density and salinity, which have significant effects on underwater sound propagation. This paper focuses on the impact of the oceanic front on three-dimensional underwa...

  • Article
  • Open Access
1 Citations
1,245 Views
17 Pages

1 September 2025

The northern South China Sea has abundant frontal systems near coastal and island regions, which play crucial roles in regional ocean dynamics and ecosystem. While previous studies have established preliminary understanding of their spatial distribut...

  • Article
  • Open Access
1 Citations
953 Views
23 Pages

24 June 2025

Typhoons can significantly alter ocean hydrodynamic processes through their powerful external forces, greatly affecting marine biogeochemistry and ocean productivity. However, the specific impacts of typhoons with different tracks on coastal dynamics...

  • Article
  • Open Access
12 Citations
3,411 Views
18 Pages

An Efficient Algorithm for Ocean-Front Evolution Trend Recognition

  • Yuting Yang,
  • Kin-Man Lam,
  • Xin Sun,
  • Junyu Dong and
  • Redouane Lguensat

6 January 2022

Marine hydrological elements are of vital importance in marine surveys. The evolution of these elements can have a profound effect on the relationship between human activities and marine hydrology. Therefore, the detection and explanation of the evol...

  • Article
  • Open Access
1 Citations
2,081 Views
22 Pages

7 November 2024

Ocean fronts, widespread across the global ocean, cause abrupt shifts in physical properties such as temperature, salinity, and sound speed, significantly affecting underwater acoustic communication and detection. While past research has concentrated...

  • Article
  • Open Access
20 Citations
6,629 Views
20 Pages

Sea Level Trend and Fronts in the South Atlantic Ocean

  • Laura A. Ruiz-Etcheverry and
  • Martin Saraceno

The understanding of the physical drivers of sea level trend is crucial on global and regional scales. In particular, little is known about the sea level trend in the South Atlantic Ocean in comparison with other parts of the world. In this work, we...

  • Article
  • Open Access
43 Citations
8,203 Views
15 Pages

16 February 2016

Monitoring front dynamics is essential for studying the ocean’s physical and biogeochemical processes. However, the diurnal displacement of fronts remains unclear because of limited in situ observations. Using the hourly satellite imageries from the...

  • Letter
  • Open Access
28 Citations
5,632 Views
12 Pages

Seasonal Variability of SST Fronts in the Inner Sea of Chiloé and Its Adjacent Coastal Ocean, Northern Patagonia

  • Gonzalo S. Saldías,
  • Wilber Hernández,
  • Carlos Lara,
  • Richard Muñoz,
  • Cristian Rojas,
  • Sebastián Vásquez,
  • Iván Pérez-Santos and
  • Luis Soto-Mardones

7 January 2021

Surface oceanic fronts are regions characterized by high biological activity. Here, Sea Surface Temperature (SST) fronts are analyzed for the period 2003–2019 using the Multi-scale Ultra-high Resolution (MUR) SST product in northern Patagonia,...

  • Article
  • Open Access
20 Citations
4,653 Views
23 Pages

Altimetry-Based Diagnosis of Deep-Reaching Sub-Mesoscale Ocean Fronts

  • Lia Siegelman,
  • Patrice Klein,
  • Andrew F. Thompson,
  • Hector S. Torres and
  • Dimitris Menemenlis

28 August 2020

Recent studies demonstrate that energetic sub-mesoscale fronts (10–50 km width) extend in the ocean interior, driving large vertical velocities and associated fluxes. However, diagnosing the dynamics of these deep-reaching fronts from in situ o...

  • Article
  • Open Access
15 Citations
4,674 Views
26 Pages

Drifting Speed of Lagrangian Fronts and Oil Spill Dispersal at the Ocean Surface

  • Gina Fifani,
  • Alberto Baudena,
  • Milad Fakhri,
  • Georges Baaklini,
  • Yannice Faugère,
  • Rosemary Morrow,
  • Laurent Mortier and
  • Francesco d’Ovidio

9 November 2021

Due to its dire impacts on marine life, public health, and socio-economic services, oil spills require an immediate response. Effective action starts with good knowledge of the ocean dynamics and circulation, from which Lagrangian methods derive key...

  • Article
  • Open Access
2 Citations
1,450 Views
24 Pages

The China Coastal Front from Himawari-8 AHI SST Data—Part 2: South China Sea

  • Igor M. Belkin,
  • Shang-Shang Lou,
  • Yi-Tao Zang and
  • Wen-Bin Yin

14 September 2024

High-resolution (2 km) high-frequency (hourly) SST data from 2015 to 2021 provided by the Advanced Himawari Imager (AHI) onboard the Japanese Himawari-8 geostationary satellite were used to study spatial and temporal variability of the China Coastal...

  • Review
  • Open Access
2 Citations
3,395 Views
25 Pages

2 January 2023

The Subtropical Front (STF) plays a key role in the ecology of Chilean jack mackerel Trachurus murphyi. Nonetheless, there are few remote sensing studies of the STF in the open Southeast Pacific, and almost all of them have been conducted by satellit...

  • Article
  • Open Access
1 Citations
2,672 Views
33 Pages

South China Sea SST Fronts, 2015–2022

  • Igor M. Belkin and
  • Yi-Tao Zang

27 February 2025

High-resolution (2 km), high-frequency (hourly) SST data of the Advanced Himawari Imager (AHI) flown onboard the Japanese Himawari-8 geostationary satellite were used to derive the monthly climatology of temperature fronts in the South China Sea. The...

  • Article
  • Open Access
1 Citations
2,192 Views
21 Pages

Cold fronts are meteorological phenomena that impact the northern Gulf of Mexico, mostly between the fall and spring seasons. On average, they pass the region every 3–7 days, with a duration ranging between 24 and 74 h. In the present study, a...

  • Article
  • Open Access
6 Citations
2,807 Views
22 Pages

11 November 2020

Atmospheric cold front-generated waves play an important role in the air–sea interaction and coastal water and sediment transports. In-situ observations from two offshore stations are used to investigate variations of directional waves in the c...

  • Article
  • Open Access
2 Citations
2,143 Views
14 Pages

Genetic Variability and Connectivity in the Western Mediterranean Populations of the Bathyal Crab Geryon longipes

  • Ariadna Colmenero,
  • Bruna Serra,
  • Clàudia Lagares,
  • Eva Rojo-Francàs,
  • José L. Pérez-Gil,
  • Francesc Mestres and
  • Pere Abelló

7 April 2023

Geryon longipes is a crab species that inhabits the muddy bottoms of the middle and lower slopes, as well as bathyal bottoms ranging from 400 to 2000 m in depth. To assess its molecular diversity, a fragment of 572 bp of the COI (Cytochrome Oxidase s...

  • Technical Note
  • Open Access
12 Citations
5,672 Views
12 Pages

6 June 2020

Validation of satellite-based retrieval of ocean parameters like Sea Surface Temperature (SST) and Sea Surface Salinity (SSS) is commonly done via statistical comparison with in situ measurements. Because in situ observations derived from coastal/tro...

  • Article
  • Open Access
1 Citations
2,742 Views
18 Pages

Sea surface temperature (SST) fronts were analyzed in the Levantine Basin of the Mediterranean Sea over a 20-year period (2003–2022) using a high-resolution (~1 km) satellite dataset. Frontal gradients were strongest in regions of freshwater in...

  • Article
  • Open Access
1,047 Views
21 Pages

28 February 2025

The dynamics of large-scale components of the Earth climate system (tipping elements), particularly the identification of their possible critical transitions and the proximity to the corresponding tipping points, has been attracting considerable atte...

  • Article
  • Open Access
12 Citations
3,870 Views
16 Pages

20 November 2021

Chlorophyll fronts are important to monitor and map the oceanic front, especially in the season when sea surface temperature (SST) fronts weaken. In this study, surface chlorophyll-a (chl-a) fronts in the Yellow and Bohai seas were characterized for...

  • Article
  • Open Access
1 Citations
2,178 Views
21 Pages

31 October 2023

This study investigated the relationship between the predicted track of Typhoon Mawar (2023) and the quasi-stationary front along the southern coast of Japan where heavy rainfall occurred. Also, the role of ocean coupling was explored by using global...

  • Article
  • Open Access
6 Citations
2,347 Views
17 Pages

20 July 2023

Two internal solitary waves (ISWs) with very long fronts observed by synthetic aperture radar (SAR) images in the northern South China Sea (NSCS) are comparatively analyzed based on oceanic reanalysis data and the Korteweg–de Vries (KdV) theory...

  • Article
  • Open Access
6 Citations
3,123 Views
22 Pages

18 December 2021

Cold fronts, as one of the most frequent extreme weather events, can induce significant waves on the sea. This work analyzes the spatial and temporal variations in cold front events, especially the characteristics of wind directions during cold front...

  • Article
  • Open Access
9 Citations
3,529 Views
16 Pages

Surface Bacterioplankton Community Structure Crossing the Antarctic Circumpolar Current Fronts

  • Angelina Cordone,
  • Matteo Selci,
  • Bernardo Barosa,
  • Alessia Bastianoni,
  • Deborah Bastoni,
  • Francesco Bolinesi,
  • Rosaria Capuozzo,
  • Martina Cascone,
  • Monica Correggia and
  • Davide Corso
  • + 8 authors

The Antarctic Circumpolar Current (ACC) is the major current in the Southern Ocean, isolating the warm stratified subtropical waters from the more homogeneous cold polar waters. The ACC flows from west to east around Antarctica and generates an overt...

  • Article
  • Open Access
2,318 Views
13 Pages

Asymmetric Frontal Response across the Gulf of Mexico Front in Winter 2016

  • Mohammad Barzegar,
  • Darek Bogucki,
  • Brian K. Haus,
  • Tamay Ozgokmen and
  • Mingming Shao

The interaction of cold-vertically stratified (CVS) Mississippi River water with warm-horizontally stratified (WHS) Gulf of Mexico water resulted in a front that affected the oceanic surface layer. Our cross-frontal observations demonstrated two vert...

  • Letter
  • Open Access
10 Citations
3,485 Views
18 Pages

13 October 2020

Coastal and offshore waters are generally separated by a barrier or “ocean front” on the continental shelf. A basic question arises as to what the representative spatial scale across the front may be. To answer this question, we simply co...

  • Article
  • Open Access
1 Citations
2,001 Views
17 Pages

Ocean Color Image Sequences Reveal Diurnal Changes in Water Column Stability Driven by Air–Sea Interactions

  • Jason K. Jolliff,
  • Travis A. Smith,
  • Sherwin Ladner,
  • Ewa Jarosz,
  • Mark David Lewis,
  • Stephanie Anderson,
  • Sean McCarthy and
  • Adam Lawson

6 November 2023

The southward propagation of cold-air frontal boundaries into the Gulf of Mexico region initiates a cascade of coupled air–sea processes that manifests along the coastlines as an apparent brightness anomaly in the ocean color signals. Our hypot...

  • Article
  • Open Access
2 Citations
1,104 Views
19 Pages

19 December 2024

The oceanic fronts play an important role in marine ecosystems and fisheries. This study investigates the seasonal variability of sea surface temperature (SST) fronts in Zhoushan and its adjacent seas for the period 1982–2021. The influences of...

  • Article
  • Open Access
22 Citations
5,707 Views
30 Pages

27 May 2020

The Svalbard archipelago, with its partially closed waters influenced by both oceanic conditions and large tidal glaciers, represents a prime target for understanding the effects of ongoing climate change on glaciers, oceans, and ecosystems. An under...

  • Article
  • Open Access
6 Citations
4,228 Views
29 Pages

1 June 2020

Here we consider the effects of surface buoyancy flux and wind stress on a front in turbulent thermal wind (TTW) balance using the framework of Crowe and Taylor (2018). The changes in the velocity and density profiles induced by the wind stress and b...

  • Feature Paper
  • Article
  • Open Access
13 Citations
2,839 Views
13 Pages

2 December 2020

In this paper, subtidal responses of Barataria Bay to an atmospheric cold front in 2014 and Hurricane Barry of 2019 are studied. The cold fronts had shorter influencing periods (1 to 3 days), while Hurricane Barry had a much longer influencing period...

  • Article
  • Open Access
11 Citations
2,714 Views
17 Pages

25 October 2022

The offshore China (OC) region is a significant sea area in the Western Pacific and many researchers have been interested in the distribution of sea surface temperature (SST) fronts in this area. In this study, the Cayula and Cornillon single image e...

  • Article
  • Open Access
2 Citations
2,245 Views
8 Pages

2 December 2022

Sea ice extent in the Antarctica, unlike in the Arctic, did not show a decrease until 2016 under observed global warming. The aim of the study is to explain this climatic phenomenon based on the idea of joint dynamics of the Southern Ocean oceanic st...

  • Article
  • Open Access
21 Citations
12,375 Views
18 Pages

Extremophiles in an Antarctic Marine Ecosystem

  • Iain Dickinson,
  • William Goodall-Copestake,
  • Michael A.S. Thorne,
  • Thomas Schlitt,
  • Maria L. Ávila-Jiménez and
  • David A. Pearce

Recent attempts to explore marine microbial diversity and the global marine microbiome have indicated a large proportion of previously unknown diversity. However, sequencing alone does not tell the whole story, as it relies heavily upon information t...

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