Monitoring of position of the Kuroshio axis in the Tokara Strait using sea level data

Churchill, Manitoba, is located near the centre of postglacial uplift caused by the Earth's recovery from the melting of the Laurentide Ice Sheet. The value of present-day uplift at Churchill has important implications in the study of postglacial uplift in that it can aid in constraining the thickness of the ice sheet and the rheology of the Earth. The tide-gauge record at Churchill since 1940 is examined, along with nearby Holocene relative sea-level data, geodetic measurements, and recent absolute gravimetry measurements, and a present-day rate of uplift of 8–9 mm/a is estimated. Glacial isostatic adjustment models yield similar estimates for the rate of uplift at Churchill. The effects of the tide-gauge record of the diversion of the Churchill River during the mid-1970's are discussed.

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Testing an “IoT” Tide Gauge Network for Coastal Monitoring

IoT ◽

10.3390/iot2010002 ◽

2021 ◽

Vol 2 (1) ◽

pp. 17-32

Author(s):

Philip Knight ◽

Cai Bird ◽

Alex Sinclair ◽

Jonathan Higham ◽

Andy Plater

Keyword(s):

Sea Level ◽

Morphological Changes ◽

Tide Gauge ◽

Low Cost ◽

Pressure Sensors ◽

Wave Activity ◽

Tide Gauges ◽

Coastal Monitoring ◽

Level Data ◽

Operational Constraints

A low-cost “Internet of Things” (IoT) tide gauge network was developed to provide real-time and “delayed mode” sea-level data to support monitoring of spatial and temporal coastal morphological changes. It is based on the Arduino Sigfox MKR 1200 micro-controller platform with a Measurement Specialties pressure sensor (MS5837). Experiments at two sites colocated with established tide gauges show that these inexpensive pressure sensors can make accurate sea-level measurements. While these pressure sensors are capable of ~1 cm accuracy, as with other comparable gauges, the effect of significant wave activity can distort the overall sea-level measurements. Various off-the-shelf hardware and software configurations were tested to provide complementary data as part of a localized network and to overcome operational constraints, such as lack of suitable infrastructure for mounting the tide gauges and for exposed beach locations.

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Variations of the Kuroshio in the Luzon Strait revealed by EOF analysis of repeated XBT data and sea‐level anomalies

Journal of Geophysical Research Oceans ◽

10.1029/2020jc016849 ◽

2021 ◽

Author(s):

Yu Long ◽

Xiao‐Hua Zhu ◽

Xinyu Guo ◽

Fei Ji ◽

Zhiyuan Li

Keyword(s):

Sea Level ◽

Luzon Strait ◽

Eof Analysis ◽

Sea Level Anomalies ◽

The Kuroshio ◽

And Sea Level

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Pattern of recent vertical crustal movements in Maritime Canada

Canadian Journal of Earth Sciences ◽

10.1139/e76-069 ◽

1976 ◽

Vol 13 (5) ◽

pp. 661-667 ◽

Cited By ~ 26

Author(s):

Petr Vaníček

Keyword(s):

New Brunswick ◽

Sea Level ◽

Bay Of Fundy ◽

Vertical Movements ◽

Crustal Movements ◽

First Order ◽

Level Data ◽

Velocity Surface ◽

Maritime Canada ◽

Vertical Crustal Movements

A surface depicting linear vertical movements in Maritime Canada was computed from sea-level data recorded by 8 tide guages and 308 mostly disjoint, relevelled segments of the first-order Canadian levelling network. Owing to the sparsity of the available data and their distribution, the velocity surface must be regarded as indicative of the crude features only. The indications are that there is a west-northwest trending belt of faster subsidence across the eastern end of the Bay of Fundy, and that there may be an area of uplift in northeastern New Brunswick. Although the faster subsidence around the eastern Bay of Fundy seems to be well established now, more data are needed to prove or dispel the existence of the indicated uplift.

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