Characteristics of an Advective Marine Heatwave in the Middle Atlantic Bight in Early 2017
| Autor: | Frank Bahr, Sara Haines, Anna Malek Mercer, Aubrey Ellertson, Ke Chen, Paula S. Fratantoni, Glen Gawarkiewicz, Harvey E. Seim, Lu Han, Jacob Forsyth |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
010504 meteorology & atmospheric sciences lcsh:QH1-199.5 coastal ocean circulation Ocean Engineering Aquatic Science lcsh:General. Including nature conservation geographical distribution Oceanography 01 natural sciences warm core ring Warm core ring lcsh:Science 0105 earth and related environmental sciences Water Science and Technology Global and Planetary Change geography geography.geographical_feature_category Continental shelf Advection 010604 marine biology & hydrobiology Anomaly (natural sciences) Front (oceanography) Heatwave shelfbreak front Salinity Sea surface temperature Middle Atlantic Bight lcsh:Q Hydrography Geology |
| Zdroj: | Frontiers in Marine Science, Vol 6 (2019) |
| ISSN: | 2296-7745 |
| Popis: | There has been wide interest in Marine Heatwaves and their ecological consequences in recent years. Most analyses have focused on remotely sensed sea surface temperature data due to the temporal and spatial coverage it provides in order to establish the presence and duration of Heatwaves. Using hydrographic data from a variety of sources, we show that an advective Marine Heatwave was initiated by an event in late December of 2016 south of New England, with temperature anomalies measuring up to 6°C and salinity anomalies exceeding 1 PSU. Similar features were observed off of New Jersey in February 2017, and are associated with the Shelfbreak Front migrating from its normal position to mid-shelf or further onshore. Shelf water of 34 PSU was observed just north of Cape Hatteras at the 30 m isobath and across the continental shelf in late April 2017. These observations reveal that the 2017 Marine Heatwave was associated with a strong positive salinity anomaly, that its total duration was approximately 4 months, and its advective path extended roughly 850 km along the length of the continental shelf in the Middle Atlantic Bight. The southward advective velocity implied by the arrival north of Cape Hatteras is consistent with previous estimates of alongshelf velocity for the region. The origin of this Marine Heatwave is likely related to cross-shelf advection driven by the presence of a Warm Core Ring adjacent to the shelfbreak south of New England. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|